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Full text of "Your Computer"

Canim r 

Oonrnafk DKf 

Francs Fr 

Gwmanv DM 650 

Gr*K« D» 290 00 

Holland CH n M 

Italy L 4200 

New Zealand KZS 3 70 

Singapore k'f 62b 

Spain Ptft MO.OO 

Switzerland SFf. 7.00 

USA £ 395 (D7Zf63 



E 




HnHH 



VEMBER 1984 BRITAIN'S BiGGEST-SELLtNG HOME COMPUTER MAGAZINE Vol. 4 No. 11 

PIRACY: Are you guilty o' 
stealing £100,000,000? | 



»-» ""J I 




Mitsubishi 

BBC Music, ZX-81 Red Ants and One Brood 
CBM-64 Quick Load and Canyon 
Spectrum Zoom and Multitask 
A mstrad Word Processor 



THE 
OFFICIAL 



L 



ko. 



fn^Mf 



\ 



*S 



K you've ever wondered how it 
feets to be Eddie KkJd , . defying 
danger and gravity, soaring on a 
motof-btke over a kxig line of can 

here's yourchance to find out' 

This fabulous new game - 
Jump Challenge - has been 
produced for you by Martech» 
with a lot of help from Eddie 
himself. 

At the age of 1 2 r Eddie Kidd 
was jumpmg over oil barrel on a 
bicycle. At 18, he chartered me 
world record with his Astounding 
ieap of 190 feet- clearing 14 
double-decker buses. Can you 
match his ikrfl, courage, contr oi 
and ice-cool nerve 7 Jump Challenge 
wfl show how you compare with the 
King of Motor Cycle Stums* 



. 4 1 HWilfflhiBjiH a ti m >nnn 



moilcch 



Just like Eddie, you'll start by trying to 

dear barrels on a bicycle , - graduafy 

working up to attempting Eddie's danng 

leaps which have thrived mMtons 
around the worid! 

□ 100% machine code 

D separate control of bike and nder 

for incredible realism 

□ dangerous headwinds for added 

difficulty 

D scoring system - for successful jumps 

□ joystick Of keyboard OpbOn 

□ PIUS" 1 you can enter (tie Official 
International Jump Challenge 

Competition! 
De tads on cassette insert 

Available from tearing software 

retailers Oft order today 

by mail, price £6 95 (48K 

Spectrum) or £7 95 

(Commodore 64, 

66C 6", * Electron) 

including VAT end P4P 

Pteas* rtwfc* cheque or 

postal order payable 

to Software 

Communications Ltd. 

Allow 7 days for deftvery. 



Mflrtech is the registered trade mark of Software Communications Limited 
Mflftech House, Bay Terrace, Pevensey Soy, East Sussex BN24 6ff 

TRADC ENQUIRIES WELCOME, PHONE; (0323) 768456 TEUEX ; 8 7 46 5 EX1M anghton 



48K SPECTRUM • COMMODORE 64 • BBC '8' • ELECTRON 




New Sinclair — page 42. 




MSX machines: page 62. 



I 1 



I B 



BBC Gunner: page 91. 



> /| |[| LETTERS AND EDITORIAL: Basic 
is belter; that w» the bodge thai was, 



40 



M "JNEWS: New Sinclair Spectrum Plus, 
"■■Bm music program yet and more, 




AC FIRST BYTES; Speech synthesis AD 

Hrwand recognition; also robots. H" 3 



COMPUTER CLUB: Lee Faddou 
gets a little tan in the Southend rain. 



51 



SOFTWARE SHORT LIST: Try for a third down; go on down with Detu Ex 
Machina; try landing your interdict or at base without getting shot down. Litest games. 



g- C QUEST CORNER; H ugo North leads JJ "T 
wuitl venturers through new marcs. 3 m 



VIC-80 SOFTWARE REVIEW; 

I'aul Bond pats the old workhorse. 



59 
62 



Bond sees whit's on the CPC-4*4. 



CflBBC SOFTWARE: Simon Beeilcy 
UU finds the Becb for from on the wane. 



FACE TO FACE WITH MSX MICROCOMPUTERS: GrjTO Moody gets to gripi 
with the rigid uniformity of Japanese MSX machines, plus a Korean interloper. 



67 



THE VOUR COMPUTER GUIDE TO MICRO BUVS: What microcomputer* are 
around, what will be around shortly — alledgedly, A g computer consumers. 



^Q PIRACY — THE BLACK FLAG: Mciricm /ones sets the scene for a laic of 
# O skulduggery, greed and treachery. What the big companies are really afraid of. 

PIRACY — CONFESSIONS OF A HACKER; A darkened studio, heavily backlit. 
man in the hood reveals some of the tools and tricks of the black art. 



74K 
76 



PIRACY — DEATH OP A SOFTWARE GIANT; Was it piracy, or just bad business 
practice? Bruce Everiss on the last days in Imagined bunker. 



78 



PIRACY — COMMODORE CBM-64 QU1CKLOAD: Defend yourself, landlubber. 
Quickloadi make it hard to pirate your programs, thanks lo Andrew Caple, 



QCAIJQUID SIMPLEX; Help Dr Hilfc 
O wwith David Aspi nail's Spectrum game, 

||"JORlC BROOD: P H Phoeng un- 



Q 1 BBC GUNNER: Tim Humphries 

w3 I 



draws a bead on the foe, 



VIC ELEVATORS: They may have stopped making them, but your Vic-20 
will soon be going up in the world with H Kaljeuw's elevating game. 



yolks tg£s "reme horror. 



100 



the 



chasm with Patrick Edsiond. 



106 



SPECTRUM ZOOM: Mirk Jones enable you id zoom in and get a close-up on any 
section of your screen display. 



109 



BBC MUSIC: Allows you to enter the notes on the staves and then play 
them. Get in harmonv with Nick Lea. 



14 CTHE DRAGON CURSE OF ABU SIMBEL: A voyage into the cuy of the damned. 
19; 



I Mick Stevens is your bus conductor. 



122 



CESSOR, Move paragraphs around. 



129 



ATARI ANIMATION: Bring 
those spritely sprites to life. 



1Qj^Q L 68000 DISASSEMBLER: The fitst in a scries on machine code for the 
JJo[. Fhiit Holliday initiates you in the riles of the machine 

ZX-fll ASSEMBLER: Anthony Nwokoj'e allows you to enter machine code using 
Z-S0 mnemonics. 



141 



147 



SPECTRUM MULTl: Multitasking for your Spectrum. Now you can have an Every 
and After command like on the Armtrad, thanks to Richard Taylor. 



IE ^BBC RETROFITS; John Dawson 
«J O looks at add-ons for the Micro. 



161 



COMPETITION: Win • Sony 
MSX 



163 



ZX-81 RED ANTS: Carlo Delhez helps you climb to the top of the heap. 
An absolutely vast maze, eleven times screen-sue. 



173 



RESPONSE FRAME: Tim 

Hartnell helps you with bugs. 



175 



SOFTWARE RLE: Ten pages 
of software for most home micros. 



OflO COMPETITION RESULTS: *) AQ 

rifcVUOWho won the Psion Organisers. tHO 



Bond 



rounds up micro events. 



VOUft COMPUTER. WOVEMHER 1984 



MICRO 
SYSTEMS 




gmwrietti life of lO 1 operations 



STILL THE BEST 
AVAILABLE 




Tough ABS c#&> 

225mm \ 350mm % 65mm deep 

FD42 KEYBOARD 

The FLM2 keyboard is si ill a firm favourite when it comes to a low cost option for 
your ZXB1 or Spectrum, It is no* a 'standard' to Sinclair users. Nearly presented In 
an attractive ABS plastic case it transforms the Sinclair computer into a useful 
professional unit, providing alt the graphic characters of the ZXS I or Spectrum, 
urith additional keys lo aid thr user. No technical nnrt qp 
knowledge is required for installation. 7LJL " . 7J + 80p p&p 

RS232 PRirVTFRFACE - ROM based solWre „ . „ 

Versatile printer interface. Comes complete with insl ructions JtsJ'r. 7i) 80p p&p 

and lead. 

CENTRONICS PR INTERFACE - As above but bf parallel printer with OfJQ qp 

CENTRONICS "in'pii i 1 fad can be supplied at £7.95. Further details upon £07.73 

request. 8 °P P&P 

SOUN&STIC K - Sound amplifier and Kempston compatible f> 1 Q Q C 

joystick interface £17.7%) 80p p&p 



Its easy to set' why the FDS Keyboard is the best wiling Sped rum 
keyboard in the world, This stylish, slim -line fteytoftrd has been 

transforming SptfCtrums WOlid-Wlde- 

The keyboard contains all the graphic characters of your ZX 

Spectrum, plus additional function keys It has 4 cursor control keys. 

an auio rub-nut key. a separate key for lull stop and comma, a full 

|»-nyth spac r bai . shidj Imf Aba Mde tnd 2 hint ti»ii keys foi dire* I 

en I ry into green and ted E modes. 

The FDS Keyboard has real individual contact >u itches and not 

a membrane like most other Spectrum keyboards on the market 

which are more enpenslve. 

The case is easily adapted lo allow the mkrodrive to fit inside 

along wiih I he power siipply. 

Fixing is simplicity it self and no 

soldering or technical knowledge 

is required 



£49.95 

4 £2.50 p&p 



THE MASTERUNIT 





The Fuller Box can be 

bought separately for £29,95 

<tnd the Orator lor £M 95 - SOpp&p 



I his & the ultimate games unit, containing not only the sound 
synthesiser from the Fuller Box but also the speech unit from the 
Fuller Orator, 

It wilt probably be the only add-on you will need lo buy after the 
Spectrum, We don't call this the Master Unit for nothing » 
il contains a Programmable Sound Generator. Joystick Controller. 
Beep Amplifier. Cassette Interface. Through Bus and 'Orator" Phoneme 
Voice Synthesiser plus a three-inch Joud speaker and volume control. 
Speech can be synthesis? d easily so that your micro can talk to you 
and play chords of music at the same time 
Dimlly accessible in Basic il is able to iay 
anything you command using the keyboard w i 
gomes program, + £2.50 p&p 



eii yuui miimuvoii lain, ivyvu 

r , £39.95 



NORDIC KEYBOARDS U.K. 

TEL: 051 546 0486 



PRE-CHRISTMAS 
OFFER 



RANDLES ROAD, 
KNOWSLEY, MERSEYSIDE 

FULLER PRODUCTS ARE AVAILABLE THROUGHOUT THE U.K. AT ANY OF THE FOLLOWING DEALERS OR VIA 
MAIL ORDER - FROM TREMIVER LTD., «a PACK LANE. BASINGSTOKE. TEL: 0256 693S6 or 
CHESTER COMPUTERS BY MAIL, UNENHALL HOUSE. 88-90 WATERGATE, CHESTER 



ik 


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Bcnuct ContouHr Stor*. 


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LflMt. 


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Central Ccmputcn. 


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ronbiir^i C'rcvH.tfrt, 


Lfcnrpcui 


London 


C OffrpWC LdfnpUfirlf SnOfrtt^ 


Koffhrrh*m 


Wibw#) 


EJb»> Cernpulm. 


Adfrtw World, 


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l*»1h»mpIon HmtCvnAr, 


Mgrorariahop, 


Ciim 


Edjtwtf* 


0*^#vJrt, 


NotrMrnpicm 


Surrey 


Fwmrt Cflmputsnj, 


*""°8 $""'**'* L4d. 


LlfcM*. 


Tim ton^uMt Smn. 


Cam*w1cr Vwv. 


PtoMon, 


Dr^rrtord 


frricta at Bncftcrd. 


Po»lf«^. 


Mulotcteurid Mrjioihco, 
Rfdcir 


C*rntmdar Cdmpulrr Starr, 


Brtdtord 
JuM M*rt> 


thf t*m* C'Limpfin Shop, 
Ncnhilrrun. 


LANC* 


TrmpO Cornpui*!*, 




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T>* SaflWH* C«1*r». 


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BWhburn 




JRS SoThwrt, 


Ctarb) 


Ballon 


The CwnpuW Shop <Hw*i*rnh»i, 


CHE5KKE 


WOfllMlfl. 


T>* St4iw«t. Shop, 


Barton Cofiwulrr C«nHv, 


CamnuHn Uik. 


JCV Hrfi «nd Vd« (J*,, 


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Barrow 


Thtf Compu:*i SUxj d-inciilrjrr, 


ChMhrf. 


Wvwh 


Sntnuww C*>r, 


Cj*m Computtiv 


UHDHMl 


Omirr Sofftun Ccnfn, 


HabDKii^K Hwnr Cutnpuim. 


WoWihfTnplnri 


Botfcm 


LONDON AREA 


GNMt 


uiamm 


Notlh NMll ContHitrl C«Mrt. 


CnM SrmSot i ■ 
faprkjM 




{MhMctd, 

, NUrctmMrj 


Unrth 


&rilon<»A«hlbU 



program 

stent the trt* of best at t*fle adventure 
program bar norr f rem jet Set INtiiy 
KQHOTOni WW rpq?t recover alf of tneoffcw 
Df tfie legendary Oragon AnuiMn twhurti 
has oeert Kattrrrfl ftirputpflmei For nit 
nwKTff tncgrsat mag.1f.t3n umth 
TnrouOnour tile quest if/m conin up 
against many ganger* from hu$e 
Preftstor tc Dinosaurs to r, 
RO&3T* but tn« reward for recovering an 
of rne pieces grants t^e ris* 
program * eat ur« a numoer of major 
atmnfesovflT jt>t Set Willy fnoojme^ 
designer, IUTE stresse* ttvit each oi 
game* 60 pit* ltreeniieTflrigs Is gen 
t*tqi\ r ewiuiicri « opposeO To osuedo rign 
ret ang aoesn t require .1 1 .n le to explain 
what tfoure looking at Tin? Sprite 
characters, are of cartoon ouati tv aw] 
exfiTDtt tnc-if own unique personalities 
imprefvivp' i 1 nv n t •* i winvfanswrnno 
doubt reel corn sceptical and intrigued 
Now tiwvcan qinsout for metmeiwK* 

Available September istti for- 
Spectrum 4@k 'ESSSIC-MM 

Commodore W •: ESSSic ■ 

.:E895iCHW( 



u$« the eictoordiruifv $1 
plays Before me-cameta wnen moor 

ligMti ng xi a modern aourrty Huflter who 
aooreneriOs ana brings In Bail Bona J 



Bail Bono Company wftOriiresfoit 1 
he ^ not Dtfore rlw earner at 

trweast of Characters is. 
COIl|S3«*r', isewuuo 

hfcMH£l» 
WWfeMunv^n ObuCBM... 

T*f h »*crir 11 ■. MJRKt POST 



Available November 












KOKOTONI WILF 



PRESENT 
LEE MAJORS 

in 




. S 



"" " m 



hr»f- 



■ii 

P 





Every single ELITE' 
product carries the 
unique ELITE' Holo graphic 
Sticker Make sure your 



>py does, its your 
ntee of quality. 



4 



48K Spectrum 
and Commodore 64 






\A 



Mail Order: Just send a cheque or 
P.O. payable to ELITE or quote vd 
credit card no. Q 

Telephone (0922) 611215 Telex 335622 SPETEL G Attention 



• 




mnm 





Ko mo ie lu m b li n g with the game control keys, now you can 
have joys lick control on the ?Jt Spectrum %he Kempston 
Joystick interlace allows all joysticks inlhe Kompsion range 
(ana oihois lhai are Alarl compatible) 1o be used with the 
Spectrum Simply plugs unto t tie edge connector 
Mo modHlCattOn$ necessary ONLY £11,50 



1111 illltMlM 



Compatible with ZX Interface 1 the Pro Irilenace has thioe 
9-way D Sockets Two ol the sockets allow compatibility 
with Smclaii Psion soltware whilst the thud oilers the dual 
facility o I both Kemps ton joystick software and cursor key 
software The Pro-Interlace also features a cartridge slot tor 
ROM based software OHLY £19.9S 




Maximum arcade quality features at a reasonable puce 
Features Top me button lor one handed thumb control 

Tilggcr button ioi one handed index linger control Base 
tire b« r tor lell or rig ht handed com rol 8 way arc a d e 
quality leal switches Bubber return action I 5 metre cable 
Commodore and Atari compatible See joystick interlace 
tor Spectrum compatibility ONLY £12.75 



A1 last an BS 232 interlace kM the ZX Spectrum allowing 



connection 1o any printer which lollowsthe RS £32 protocol 
The interlace has Its own EPROM allowing the use ol 
keywords LUST LPRINT and COPY We recommend the 
Brother EP44 Pnnlei tor use with this interface 
Interlace complete wilh cable and conneciot ONLY £45.00 





The ultimate joystick lew the home computer reatuies 

Ktgonomic design and nylon covered steel shaft 8-way 
arcade Quality leal switches Dual lire buttons tor lelt or 
right handed play i I Rubber return action lor smoothness 

s metre cable 
Commodore and Atari compatible See joystick interlace 
tor Spectrum compatibility only £13 50 



The Kempslon Centronics iniertace win allow you to utilise a 
vast range ol printers with an industry standard Centronics 
input port on I he zX Spectrum interface i has all operating 
commands held in an EPROM so plug in and its ready to 
use ONLY £49.94 Interface S ottering similar features as 
above but software routines are provided separately to 
inn lalise the lnie rl ace before use ONLY £3 5. 00 




MICRO" ELECTRONICS LTD 



Full del a its on ell out product* are available on request 
57TC pteaie Moit product* are available Mom WH Smith Bool* 
Spectrum Computer Centres, good computer stiopi oi diiect 
All puc#) include VAT and P * P Please allow 21 dayi tor delivery 



Kempslon Micro Electro nia Lid Singe r Way 

Woouin Rood Endmlnal Estate Kempsfori Bedtoid MK427AF 

Tel (0234) U6633 Telex <2*Q76 XEMPMI 6 

Trad* Enquiries Welcome _ 




Computers 
fortxport 




Plus Printers, Disc Drives, Memory Expansion, Software 

Quantity discounts available 

No tax charge for equipment shipped abroad 

Write for our price list or coll our answer ohonp 

01-686 6362 

Galaset Ltd, 30 Bayiord Road, 

Littlehampton, West Sussex, 

England. Telex 946240 Attn: 19001335 



ADAPTED FROM THE POPULAR 
T.V. SERIES!!! 




BLOCK-BUSTER Is an exciting quiz game for ONE or TWf/piayers 
and will appeal to a wide range of ages and skiiis with nine levels 
or piav against the clock me oame tests speed of recall involving 
anticipation of the question as It unfolds across trie screen and 
speed of response dependant on trie level of piav 

BLOCK BUSTER tfiupplled With the FlfttT ADDITIONAL QUESTION 

tape rtee to maintain the challenge of the game. Now available 
at good computer shops or direct with cheque p. for £5 9 5 
inclusive. ACCESS and visa orders taken on our 24 Hour Hotline. 



CQMPUSOUND 

OEPT HCW, 53X5 LANCIEV CLOSE, MODITCH, WORCS 898 OET 
TFL6PHONE <OS27i 21429 L21439 24 Mr HOTUNEl 



REGARDEZ 

LANGUAGE LEARNING AIDS FOR 
FRENCH, GERMAN oV SPANISH 



/V/?fflQ3MJ ' FifCfflO/V 

Ai us«3 m numeroui tchodi orxJ cortege* itww progmmi cxovkm o 

nighty succeuiut o*3 to modern language teaming. Each couene 

contort o »opht»ticatect control program ano a comprehensive tenet oi 

vocabulary henom which can oe used in a variety of ten-paced teornmg 

arid loji itkkJo* Words phrase* etc aro displayed w>tti oil necewary 

aeccnis ond ipecioi characters difreteni colour* or* used rot majculme 

i»rr.inifie one neuier wordi to ait'H g*nd*r tooming 

the program* are iu^atxe rot beginners. 0-tevei and beyond w trmpie 

commands enable new leuon* In vocobutory or grammar to be created 

by ifw iiior edited a* required, men permofienilv toved rot later ute 

Iflvalyabl* to* ham»worK and e*am re^iron' 



Two cottetto* ore ayosobte for eoch fonguoge, together the** contain o 

vQCoOutofv or thouiorKJs o> word* Level a provide* te lettoni rt general 

tubfecls. Level fl provides a farmer 14 lewom ncJuding adjectives, adverbs 

and fully conjugated verb luti 



Available from your cwTipuier jiote or bv moil order Prior Ev 9S 
Alio Available ANSWER BACK General Knowledge Qui" Price £« *S 



CBM64 



VERSIONS 
AVAILABLE 



blaster 



Level A 



TWO* 




Please suppty the roflowtng ptogrom* 



irw M# MUfttu l«v*i * * sa vi 
fh» G«rmen MoiKm lev*.- * ■ M$4 

tn# Soorwth Tutor t*v*r * > £« «S 
ftMSWtlr MCK Ouu (SMkd) * ItO 03 



iFw tanen Mtilmi lav* t • G0« □ 
in* Gvmtorv Mgwt l***< 8 * GO 0} □ 

m* Sfwn^h Tuk* t*»* • • G0« 1 1 



i nave a WC Electron Spectrum computer (delete at necettary) 

m/mo/Mm 



Address 



Pwtcode 
I endow o cheque/posfol order tot £ petvetjio to KOSMOS Software 



KOSMOS SOFTWARE DEPT VC10 
1 PHgrlm* Cloio Horlington, DVNSIA&Lf. Bedt LU5 «-X 



VOUB COMPUTER, NOVEM$6ft 1984 7 



Amazing how played out some things 




become. Wi 1 1 you think the same of your 

micro in 6 months' time? 




Remember the days when every 
record player was gifted with a needle 
instead of a stvlus, 4S\ were*inr78*s 
were tt out. 

Before the days of hi-fi and laserdisc s. 
When a graphic equaliser was a break- 
through on die football pitch instead ol 
in music technology. 

I ook at a ret ord p1a\er now ami it's 
a museum piece. 

It's like that with micros t«>u. 
The machine you thought would give 
endless hours ol lun and interest often 
becomes a live minute wont Jen Played 
out within months. Or so you thought- 

But imagine communicating with 
other micro users on a nationwide 
mainframe system. Updating yoursetl 



daily with the very latest computer news 
and reviews. Paging a special Bulletin 
Board. Feasting from 'Prestel's vast menu. 
\ ven downloading a choice ol suit ware 
absolutely free. 

In lai t, imagine JO.OQO pages at your 
fingertip and you've imagined what its 
like to Ix 1 on line with the Micronet 800 
system. 

lor Just U $ a quarter (and, for most 
ol you, a local telephone call when- 
ever you want to connect up) you could 
subscribe to die Micronet system. 

The only e\na you need to connect 
up is a modem unit. Which is a small 
enough outlay lor what it buvs. 

MicronetS features are almost limit- 
less and constantly updating so why not 
sec it in action at John I ew is stores, 
selected V\. I I.Smith shops and Specmim 
LIK dealers. 

t )r fill in the coupon tor our brochure. 

You'll find you won t want to play on 
anything else. 

n 



Please send nw the Kill £*ets jIxuii Micronet 80(1 



MaWModdoTMfcro 



:>oiie. 



HICRONH t nt-rtui Mill, 

'"' VC11 | 



l"l...«t.J*. .IHM 



Making the most of your micro. 



©ntfaersttp i§>oUtoare 



UNI 



STATISTICAL PACKAGE 

M I'lTI V AM ATE BECrRK4SH*>i : Main ooifKii «nuui of «iiiut«l coelheicrih. 
1MJH. MaiHtard {mm K (JUI mCwl Rr. mndiro ettot of rcftietMon. F Hal. dim! 
Durtm-Watwn »at. Further output «fK«i«i« tnutdfilc c B CWh tto * irulrij. IMMtr 
mum*. ANOVAof wpc«jon,T(«iJi r uduali m U ry oto to* DtMapl 

l*H'1» opium fix »«* taruMc, )wWi»HiH rtpciwon. clWKc Ol *n*™tctH wMte, 
•rktmwiol indepenJcfil vaitaM^v ju1.i-«ni wjotntf lioctftj deprmkiir vj(iah4n 

ANALYSES OK VARIANCE. SCATTER DIAGRAMS AMD TIME SGMES FlATTS: 

Ok+ij jbJ (kw>-»h\ (■'jlbcmi MKruclMmJ A NOV A Uhkv Kiiltff 4fc«pimi i.rf p,nrf <i 
data and rime irrki pints wiih auikj-itslinp 

STATISTIC ' Al. 1 FATS, CORRELATION COtlTTC I IATS AMD FXO&ABILITV WV 

TtUBtT? IONS:. H*w vi ii % '<n r j^h calumn of data, < wc , %um . rockn, lUiUHC, iid drv I 
Ctliiqjwtt KHitinprim uh!c|, i {(*i»f "uittpW. Imi umpk. pured). F . M*nn-V> I 
I 1 . Md Wikrimn ugtKt) (4ftV tciii Pciim>ii'», \(k jintjrV* tjiik and FiendjH if jni unrr 
v -ntl» C'hi-muiHr. I. F. hwcmsiaJ. PiuiMin 4111I mwrnal 1«d.. ivwvhJ I dkftft* 
Kcudltnf (ct4j *m) wwr d*cFi 11c ditfriatcd «nth irffubcanec Ictrtk 

PfMfMFTIVE STATISTICS, EREUm SO' PI.\TIIIIH THIVS \M> HISTOGRAMS: 

Anarytn of n» 4»1# w d*4j »Mh frequency cnumv K'» 4iM wHIn! »»4 pmupsd 
CTwt« of knert bounds jnd daw mlcrvili Abwtott. mmulilivc ind rel-aliv-r 
frcqucKki» Hwtigramt »ilh up M ?"" Jimc* Output dnptiy* wm_ mean, mean 
linuinNt. rjiedun. vuuMfcc. »tJ tin.. Ird and 4lh mnnKtitt. ikrwnrv*. tnn-iv fatipje. 

All Tiupinn ire thnihlf craipatihic *«li Miifn Opentunt ptnftam in l|MMA\ 
pariLkfc. DitB matrix i^picii'i fumpki (tolkiiH Ik f[y*<k t HMM- :> tivi SjtTCD 
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ALSO AVAILABLE FDR4BK SPECTRUM 

INTRODUCTION It) ECONOMICS SET: £25 

ECONOMICGEOORAPHY: 19 9S * BrBLlOFTLE: £9.95 

POLYNOMtALS: £6.95 • INTEORATION: £ft.95 

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COMMODORE 64, BBC-B, 48K SPECTRUM 

* Comprcheasivc user manual % lull data handling faciliTic* ldb>plav. print, changi", saw, load) 

* All results can be printed out $ 




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acxxirjrx jr« pew* c :< ?r txyk m k >r« 64 cim ) srx^< tMrjrri 4ek 





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LYTt'H puttv-rfriW G 








sf^xjHus Cr soRcet^y 



Sword i and Sorreiy nptMmu the tun example of lb* 
i. lie in pi|>ht advpntum uxuij Ui»- unkrtM MIDAS 
«y»U"m 

Sword* Md Sorvrry differ* boa otbw *fveriturpi in thai 
you guide your character through Ulp unending corridor* 

■ <l on ■ qutti for material. phy*k*al and/or 
ipirtUial power . The f hove W younv 

YOU tkjfin W 4 ROWfce with limited abUilk** in the u*e uf 

magic, twurd play and itealth < lark picking,, thieving vie). 

At you wander the corridor*, you wiU erwouiit*-r being* 
me** and nighty . tiucwrt untold wealth and worth Ww 
traah, Some object* will totem* your powera, Mhilat *omr 
will be dangerwr and mil other* will be protected tn.su 

n (you!) hy friend uhly ingmiou* trip*, ill dntjajwrt 
w help or hinder you on your pUgrimftge to power ind 
(Jury. 

There ant quwOa within qu«*t* wiihin 6 word* and B 

for ihotw wh. j w*m to follow Utam. Sobs* «* grven other* 



fflutt be found, and tome are lott cam*. There are many 
woyi of opening th* g»u> between the level* of the dun- 

lentil Somr aft" obicurp and **sy, other* obvsou* and 
dangi-foux The moil profitable path* are both. The 
intimate goal of rut- I "he Ion armour or 

iSob. which waa un made by ll> maker, and Ui part* 
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prayer of the leeker*: 

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Available on Cassette £9-95 

SPECTRUM 48K OH COMMODORE 64 



(Multt Dintiuienai Animtat&t &>■ : 
MIDAS ADVENTURE CONCEPT 
Stunning 3D paphw- animation umuUhns video duk 
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A unique fuUy Intenctiw adventun- l«n|uaff ualnt the 
latnt ARTIFICIAL INTELLIGENCE M^hhiq 

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Real lime Interactive Conflict Sequence*. Talk to your 
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Joys ick capability for movement, combat and action* 
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COMMODORE 64 - SPECTRUM 48k 

Available soon 

ORIC - BBC - AMSTRAD 





DURELL sales dept.,C 
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^ 



ZX-81 OWNERS 




Rocket 
Man 



with 
Hi-Res Graphics 
on standard ZX-81 16K 

Actual ZX-81 Screen Display! 




I. DUmondt 

3. Platform* 

4. Ladder* 



S.FihICwu 

6 Hot kit 

7 Vulture 

S- I-eg of Lamb 



9- Player 
10 BubloW 
1 L F-'uei Gauge 

VI Mm Hirii.iiriiiHf 




I 



I 




Get rich quick by collecting Diamonds that are 
simply lying there waiting for you ! 
Oh ... I forgot to mention that there are one or 
two problems! There Is an expanse of Shark 
infested water between you and the Diamonds and a 
strange breed of Bubble that seems hell bent on 

getting you In it! Somehow you must cross it 

You have a Rocket Pac to help you (a Vulture on 
higher levels) but you must rush around the platforms 
and ladders collecting cans of fuel {legs of lamb with the 
Vulture) and cursing that weird Bubble, Once you have 
enough fuel then its Chocks Awayl 
Oh . but don't run out of fuel on the way - otherwise It's 
SPLASH! 



The aim is lo collect all the 
diamonds from the far left hand 
side of the screen, whilst avoiding 
the rampant Bubloid. These 
emerge from the sea and are hell 
bent-on reluming to their watery 
habitat with you in tow. Sooner or 
later you are going to end up in t h e 
drink - The idea is to make it later! 
By belting round the system of 
platforms and ladders, cleverly 
avoiding the Bubloid, you collect 
the fuel cans which appear in 
random positions, until you 
consider thai your fuel gauge 
indicates sufficient in the lank 
Now you can go and collect your 
rocket With the rocket pack 
strapped to your back you can fly 
across the expanse of sea to 
collect the diamonds . but 
don't run out of fuel or your 
rocket-pack will simply 
disappear and you will 
wind up in the drink! 



There are six stages with six 
different platform layouts. On 
stages 1 3 the Bubloid, which 
floats in front of the platforms 
with uncanny ease, gets an ever 
increasing ability to home in on 
your position, making the task of 
staying alive more demanding 
with each stage. On stages 4-6 
you once again start with the 
easiest Bubloid (which is a blessed 
relief!] but the fuel cans are 
replaced by legs of lamb which 
you must collect to feed your 
vukure. and once it has enough 
energy {or you think it has!) you 
must flap across the water on its 
back to collect the diamonds. 

Extra men are awarded for 
every 10,000 points - but ONLY 
once you hove collected all the 
diamonds and so completed each 
particular stage. 

CQO PLWKI 



Available from all good computer shops 
or send cheqtie/P-O. for £5.95 tfnc P&P) to: 

Software Farm, FREE POST (no stamp »<iujn>d, 
(BS3658) ,BS82YY 

Software Farm. 155 WhtteUdie* Road. Clifton, Briatol BS82RF 
THr phone (0272) 73 H 11 Tele* 444742 AFMADV G 








3333ft 





ORIC/ATMOS 

OTKBB TITUS FOR CEM64/V7.G SPECTRUM 2X81 AVAILABLE Ml REQUEST 







rTTffl CATEG ORIC (action 
June). Take command of ■ 
cruiser engaged in battle 
against fighter p tines and 
submarines. Die the radar 
and sonar systems to detect 
and destroy the enemy before 
job we rank, A 7.9S 




■■;■! Til STYX (arcade). Des- 
troy the caitiffs of the Dark 
One which guard the river 
Sty*. Struggle against matu- 
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his minions to vanquish evil. 
AB.BO 




DBDG (utility ), A mo- 
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w 





Mill ITER FLASH (arca- 
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me in 100% machine code. 

AB.SO 



" 



■ Hil l 



t\LLl TYRANN (adventu- 
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phics. A 8.95 




Llill THE DIABOLICAL TO 
WER (adventure). The Diabo- 
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each one fraught with dinger. 
Your mission is to seek out 
the treasure. A B JO 




MULTI FILER 

4CK CMUC l.'AIMC* 



FElTl MULTHTLER (busi- 
ness). A powerful program- 
me for creating Gins. Choose 
your own criteria adapted to 
your requirements. Rapid 
sort and starch features in 
machine code and possibility 
of memorising over 30000 
characters. Extremely simple 
to use. A 14.93 



Full PANIC (action). 
Catch tha marauding apples 
by setting traps, 6 Levels, 
A6.9S 



1 4IKORhClri 



1'ltH THE HARE AND THE 
TORTOISE (education). A ga- 
me for S-B year olds to teach 
the notions of right, left, up, 
down and counting. The hare 
and the tortoise decide to ra- 
ce. Who will win? The level of 
difficulty is adjustable to the 
child's ability. A B-SG 



■HER ORIC/ATMOS TITLES 



i97 ADDRESS BOOK 


£9.95 


tffl BANK ACCOUNT 


A 12. SO 


(99 BASIC PUIS 


A 9 95 


i02 COMPUTER ASSISTED 




DESIGN 


£B.50 


504 CHARACTER 




GENERATOR 


A 8.S0 


i65 CONCOORS KD7P1QUE 


£5.95 


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A 14.98 


KM FINANCIAL 




CALCULATOR 


A 9.98 


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LHTlTEa 

OR ASK YOUR DISTRIBUTOR TO CON- 
TACT US 

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g 



Home computers 

The report 
you ve been waiting for: 

simple, factual 
honest, comprehensive 

and 100% biased 



J\ 



L you need to know about 
com pute rs ca n be su mint 1 d u p 



in one word; Commodore, (Well, 
we did tell you this would be biased). 

We make everything you'll 
ever need to get the most out of home 
computing: all the hardware and all 
the software- (And if you don't 
understand what that means, simply 
look under "H"). 

That's what these 
three pages are all about 
explaining what com- 
puters in (without the 
scientific jargon), how 
they work (without any technical 
mumho-iumho], and how you can get 
more enjoyment out of them [without 
much difficulty! 



CHIP: silicon. A very complex 
electrical circuit miniaturised in 
silicon. It carries out the functions in 
the computer. Unlike other home 
co m pute r co mpa n let, we ma ke our 
own chips, so maintaining quality, 



mm _ 



D 




1SK drive, A program and data 
_ storage system, just like 

cassettes, but much faster 
You can find and load 
the program you're 
Looking for in seconds 
instead ot minutes. 
Diskettes, which can 
be used repeatedly for recording 
or re -re cording programs, transfer 
information or instructions to and 
from the computer 



It has an extensive 64K mema 
With an exceptionally large 60K 
available for use. The Plus/4 come** 
equipped with the Commodore 
BASIC * 5 with over ?.S programming 
commands, 

Other features include sound 
facilities, comprehensive graphics 
and ill colours, 



B 



ASK iVli .St home computers 
speak the same language. It's 



E 



DUCATlQN software from 
Commodore . Wc woTk 



called BASIC This is a more trtendly 
way of saying ''Beginners Alt-Purpose 
Symbolic Instruction Code" 

There are different kinds of 
BASIC and, like languages, some are a 
littleeasn.no understand than others. 
Like, BASK' &S to the Commotion 
Ptwt/4 and Commodore 16. 

HOOKS v.. li MO read: 'Teach 
Yourself Computer JVogramming 
With The Commodore 64" 
and "Programmers Reference Guide " 



CASSETTE. Just as you keep your 
1 favourite music on cassette. 



non stop with educationalists 
improving our range of 
programs for the pre-school to 
"()" level age groups and heyont 

Computers are an 
invaluable educational tool - 
versatile, patient and ahle 
to present information in an 
exciting w 

Our "Get Ready to Read" series, 
with lovable B.J Bear, 
is recognised a? 
excellen 




so you can also keep your favourite 
computer progra ms on cassette. 

You can either Buy pre recorded 
programs in a shop, or you can write 
them Yourself, Cassettes arc just one 
form of program storage and playback 
-sec alsoGrrtrtd!ges and Dish Drive, 

To play cassette software you 
need a cassette unit, The Commodore 
1530 and 1531 cassette units have 
been specifically designed to get the 
very best out of < iur computers, and 
provide consistently reliable results 





CARTRIDGES These are pn >- 
grams that plug directly into the hack 
of the computer itself 

CPU stands for Central lYo- 
cessmg Unit, This is the compul 
"brain'' and as such it's what docs all 
the hard work 



how it 

is possible to develop reading and 
writing skills in pre -school child: 
ELEPHANT: well- 
known symbol of 
i the Commodate 
64*i enormous 
64 K memory. And 
don't you forget it' 



F 



OUR is for Commodore Plus/4, 
our very latest home 



computer with four, very popular 
built-in programs: wordproecssing, 
spreadsheet (financial planning], 
database (filing), and graphics 



GORTEK and the Microchips is j 
unique programming coi 
for children of all ages, that 
links learning exercises 
with a spice adventure story 
GRAPHICS. 
The pictures and diagrams 
on a monitor or TV screen, 
either high or low resolution. 
All Commodore home 
computers have 62 graphic 
ynibols to create low resolution 
pictures and diagrams, or 

high resolution modes that 
allow you to speci fy each pi xel 
or dot 1 on the screen, 

(There can lie up to 64,000 MOf 
of (hi 

GAMES; Commodore 
produce them a! I, and more' 
From fthool cm up games, 
to games ui adventure 
and complex strategy, . 



V 



ELP! On both tin flf| 
Commodore 16 



■ 1 



and 1*1 us 4 computers § 
there is a veryspeci.il 
f cam re: a HELP key 1 1 
docs exactly what it 
n helps you to 
debug (which is the 
smart way of saying, 
Identify and 

correct errors 
when you're 
programming 

It high- 
lights errors 
right down 
to indivi- 
dual 
instruct! < 

HARDWARE. 
The computer itself -you can touch 
it. Whereas software's a program you 

nthcmonil 
when it's running in the t, ompu 




Integral goftwan is software 
^ that is actually built into 



i the computer, as on the Commodore 

. Pim> J, the very latest in borne 
m computing 

INTRODUCTION to BASIC, 
fust as. you don't need to understand 
how a air works to be able to drive it, 
vt iu don't have urn mfc rsumlhnwa 
computer works to be able to use one. 
Nut you will definitely get more 
enjoyment out <>t ii it you do have 
a basic knowledge d programming. 

Whit.li is why "Introduction to 
BASIC" has become the most popular 
ftwarc tutorial. 

It comprise* 2 cassettes and an 

follow, sup-by -step manual 
INRJT/output: Input is 
information put into the computer 
from either the keyboard or a storage 

device. Output is infonnatiao 
A from the computer to either a 
en, printer oi storage 
m. device. 



V 



JOYSTICK and paddles. 
A* well as improv- 
ing speed and accuracy, 

these make ga mo real 

by putting the control of 
whatever it is on the screen 
directly into your hands 



KJLOrn .024 bytes 

-i So "K" stands lor a 



unit of 1,024 or I* A 64K byte 
memory unit contains 64 x 2*1 

or 65,536 bytes < »t memory. 

And it you dont understand 

all that} don't won 

All thafS important 
is knowing you can run more 
complex programs through 

'inputerwith a large memory 
than one with a small nlcmorv 



TanGUAGE This 1- a system ot 
-*-** coding that can be under- 



stotid by a computer. J tallowsyou 
to "speak" to the cornpuo 
and tor the computer to "speak' 
to you. Most home computers 
speak BASIC but there are also 
other languages available tor 
Commodore a impul 
that have been designed 

tor specific us 
f-or example, LOGC 
and PILOT in eduoitit 



MONITOR: this is the 
» screen, on which 




you can sec what you've 
typed into the com- 

purer, and also what 
the Computer Is 
saying hack to you. 
You can use an 
< irdi n a r v T\ r scree i ■ , 
but more preferable 
is a colour 
video* monitor, like 

the Commodore 1701 
Phis is a special 

device that produces 
much higher 1 resolution thai) a 
TV, and so offers Superb reproduction 
and clarity 

ii topot which Hallows the rest 
ic family to stay tuned-in to their 
favourite TV programme while you're 
tuned-in to your favourite computer 
program 

MODEMS allow computers to 
connect via a telephone line to other 
computer systems. Commodore 
64 modem owners can 
communicate with other owners. 
join Systems like lYcstel/Mitronet 
and an exciting WW svstem called 

Compunet, where quality software is 
available cheaply or even free 




over again 

It stores 
both data and 
instructions 

during the execu- 
tujii <if a computer 
program These are 
ost when you switch 
the, machine off -unless, 
of course you store them 
on cassette or diskette. 



UMBER ONE. In the 
whole wide world. Com 



modorc is No. I in microcomputers, 
and the Commodore 64 is the No, I 
bestseller. 





)R are two Dasu 

types of memory: ROM and RAM 
Read Only Memory j ROM) 
is the computer's permanent built-in 
memory which tells the computer 
what tn do It doesn't disappear when 
the computer's switched ol t 

Random Access Memory 

I RAM], however, 
is for temporary 
•image. 
It is the pan 
Ti the compui 
memory that's tree 
r^^ for you to 
JjJ^5^-3f use. It can be 
erased and used over and 




o 



Rid IN of the computer. In the 
1 9th Century an Englishman, 
eharlesBabhage,iuveuteclthe first true 
computer. But his "Analytical Engine? 
was so ahead of its tunc n turned out 
to be impossible to build! 

The modem computer lust 
appeared around the time of World 
War IS, Britain's "Colossus" was vast, 
consumed vast amounts ol electricity, 
required its own air conditioned room, 
was unreliable and difficult CO Operate, 

It had its limitations. 

Ilicn came die amazing transistor, 
integrated circuits.. .and microcomputer 

The iirst desk top microcom- 
puter in the world was the Commodore 
PET (this was a friendly name for 
Personal Electronic Transactor), in 1977. 

In effect Commodore had taken 
hitherto huge, expensive, 

mysterious machines 

aeccssablc only to 
eggheads, reduced 
the Size anil price, 
and ptit them 
into the hands ui 
ordinary mortals in 
ordinary oil ices, An 
extraordinary advance 




P 



tRl N U.RALS. These are separate 
add i ms that will extend your 



oputcrs capabilities, Like our 
printers, storage devices and monitor 

1'RINTER: One of the ways a 
computer can 'Speak" to us 

It means you can produce charts, 
letters, documents, pictures on paper 




The Commodore range includes 
four printers and one printer plotter 

The MPS 801 dot matrix printer 
(so called because its characters are 
made up of dots) has a print speed of 
50 characters per second, about five 
times as fast as the fastest secretary 

The MI'S 802 dot matrix friction 
feed printer has a. 
print speed of 60 
characters ]>er second 
and uses either single 
sheets or continuous 
stationery 

The DPS 1 101 daisy wheel printer 
[called that because, surprise, surprise, 
the print wheel looks a bit like a daj 
produces superb quality print on 
all letters, reports and documents (the 
kindofcjudliiyonedespcraielyrequires 
on a letter to the bank manager). 
There's a range of alternative type faces 
available on additional print wheels 
Speed: 1H characters per second. 

And the B20 printer plotter 
{illustrated)- This has 4 colour?., and 
opens up a whole new world of graphic 
print-out ability. You can draw pictures, 
create graphic designs, plot graph 
construct bar and pie charts. Speed: 

14 characters 
per second. 

1 f 




f^WERTY- the 6 keys at the top 
V^ left hand side <»( a standard 
typewriter Unlike lesser machines, all 
Commodore computers have full-size, 
professional typewriter keyboards 

They have s soJid,i csponsm l ee I 
to them. (The problem with rubber 
or membrane keyboards Is ihev have 
a soft, spoi 1 to them you 

press a key, then wonder i f the message 
got through' 



S TAUTER PACK. Th 
v i nam 




*s* 



Starter Pack has been 
specially designed to 
introduce you to computing 

It contains everything you need 
to start home computing, complete in 
one box: a l&K. computer, cassette 
unit, four superb software programs, 
and Introduction to BASIC Pan 1. 

It has a Hdp key in case you 
get into difficulties, and incorporates 
"advanced BASIC, which has been 
specifically designed to simplify the 
programming prot 

Other features include: 4 cursor 
keys, 2 joystick ports, an astonishing 
121 colours, plus excellent sound and 
graphics capabilities 




ley were 
invented for 
everyone, and the fact that they're fun, 
exciting, educational, practical and 
time-saving arc benefits that apply to 
women just as much as to men. 



TUNES. Commodore make software 
-E- to help you compose your 

very own music. 

All our home computers have 

great sound and music capabilities. 



MAS, There is no 
better time to 



give or receive a 

Commodore 

present. 



u 



SER friendly. This is a program 
that explains itself as it 



goes a king,, or a computer that 

people can easily operate 

Every computer 
manufacturer now claims 
its products arc 'user 
Inendly," hut only 
Commodore really 
demonstrates it. For exam pie, our Help 
key and use of Advanced BASIC 




V 



Y 



jPPEE! Yes, now you know 

(or should do} that computers 



E.RTICAL integration is not as 
complicated as it sounds. All it 



means is that Commodore make 
everythingiodowuhei no outers, f rom 
the silicon chip to the computereasing. 
So we have complete control over 
everything, from design to manufacture. 
It also means, of course, that we 
Can design everything so you're 
able to get the very best out of your 
Commodore computer system. 



R 



AjNGE. The 



range 



of Commodore 
software 
is enormous. 
There is some- 
thing, as they 
say, for everyone: 
educational, 
business, home 
and games, 



OMEN also are discovering 
computers -and not just in 
offices, but 
at home. 
Computers 
aren't sexist 




are really interesting. They're not just 
about space games with horrendous 
monsters. Nor are they horrendously 
complicated machines that you need a 
maths degree to understand. 

Computers are the future, and 
it's important that you and, even more 
so, your children don't get left hehind 
in the past. 

With a Commodore computer 
and a peripheral or two (and we now 
. HOW what those are, don't we?) whole 
new leisure and business opportunities 
will immediately be opened to you 

Make the choice now and (iust 
SO long as it's Commodore) we promise 
you will never regn 







z 



1 1 1 us a line if you'd like more 

even more biased information 



ay Commodore products. 
Write or telephone: Commodore 
In tor ma t ion Centre, 1 Hunters Road, 
Weldun, Corby Northampton 
NN57 ]QX.Tcl: Corby (0536) 205251 






ft commodore 



TWO GREAT 
NEW CHART CLIMBERS 

from 




■COMMODORE 
■ i i i t i i i i-i-n-i- 



IWflRLOK 

i I . i ' | I i I, I ■ i M i I ' I i -I , ■ i 




tou& 



-COMMODORE 64- 



I I I I I M f I I I I I 





i . 1 1 1 a i .i 1 1 1 1 1 1 1 t 1 1 1 1 i r 




&J(f 



Sum* Colonial Union is crumbling and 

the planets Wa n iho brink of 

<?d and boarded by lb . 

■ 

(ran- 

purposes . placed . 



purpo 

i ground faience network. 



■oi 
drones before Wartok can discover I cs acces* 

Below you get to the drones you must s 'thai defer* ' 

J attack robots laser barrii 



ftirtce amongst h 



l rnvutCTt 









Ifl 1 h - ' l )'■ ' '<■' t -! "■ *• j' :■. * r : * ■' • - \ \ irvr lifts 



war: 






resolution 



To com: ; «r must raid eacr 



Both programs 

£7.95 

in your high street. 

If in difficulty 

contact us 

direct. 



acrtfu- c ill 1 «J<w 



Atc*»* and Barclaycard ut-tcomi 



119, JOHN BRIGHT STREET, 
BIRMINGHAM Bl 1BE 

DEALER & Telephone: 021-643 5102 

D1STRI BUTOR e *ci«»iv* duidbtJior of scott adams products 
Enquiries Welcome 



t 



• 



• * I 




Storm Warrior 

He needs no allies, his strength and agllltv wW prove htm worthy of the 
name - Storm Warrior. 

Storm Warrior is a 12 screen, all machine code, fast moving graphics 
adventure using 58K of ram. it features 5 levels of play, full playing 
demo mode on the first four screens, game freeze facility and a fast 
loading system. 

Commodore 64 Tape £795 Disk £9.95 (including VAT I 

The White Viper. 

A great graphics adventure in the land of Demons, coming soon. 
Commodore 64 Tape £7,95 Disk £995 (including vat ) 

Dead City Rescue. 

The mind blowing, fast loading, 1D0 screen graphics adventure 
featuring 5 diff erent speeds of scrolling to give an incredible depth of 
perspective Mentally stimulating, strategy packed, visually stunning! 
Commodore 64 TapeE7.95 Disk E9.95 (including VAT) 





Meet the Challenge 



ft 77Mfef- 

>AMUKA» SOFTWARE 



Caatle of ttjt j&huti lorb 

Packaged in a 

Special Presentation Box 

which includes a 

"Free Dust Cover" 

for vow computer. 



In a baitl* lost in ih« muti 
of time, the necromania Skull 
Lord attacked and defeated 
9 tm d1 noble Dwarves. 
The Dwarves losl many ir««s 
urei. the moit valuable of 
these being ih« "Crown of 
Dwarves Kings", For many 
age* did they attempt to 
regain this artifact, and for 
many ages did they fail. 

Now in desperation they Call 
Upon you, nulile warrior, 
to attempt thai which it 
beyond their power. 

Your quaii:- To regain Iht 
fabled crown and defeat the 
all powerful ikull lord. 

The adventure i» of the 
classic I or mot, Simple verb 
noun combinations are ex- 
pected, and will usually be 
understood. 





MSrflafftETCflll 



mm 



i. ** ■»■■ 



SfHHIi 

INVADER 



Samurai Invaders 



Vou control a fearsome Samurar 
warrior whom aim it lo prevent the 

Alien irtytderl from gjmmg control 

of the earth. To help yon in this 
task, you are armed with shuriken. 
feariome oriental throwing it an 





Please tick the correct boxes 
in the mail order coupon. 



Ms. Mazey 



Can you guide the intrepid Mi. Mazey 
around her garden moia and collect 
the daisies' Of mil you fall victim 
10 the evil skull riders? (fn a garden?) 
Can you make it to the magical "flow- 
er pilii"- Will you got irw "flower 
power" to lap the tkulls? Will Mi. 
Mazey ever get to we the flower of 
her heart, Percy Chucka? 



Rooster Run 

Why DIP the chicken ero*t the 
road? You don't know? Neither 
do wa, but with th* h<rip of this 
game you may just lind out I 
Your aim is to guide the ha plait 
rooster aero** the road, then, get in 
th* boat and avoid the aquamarine 
hazards. What could be Wfliplor? 1 



£8.95 AMSTHAO 

D 

£7.95 CSM64 

D 

CS.95 
SPECTRUM 4flK [ 

£795 BBC 

D 

£7,95 ELECTRON 



SJWuni 

(SvADSRS 
C7-9S 

Amtff** f~~i 
Only I I 



MS MAZEY 
A /iirx eat| 



£8 95 SHAHPMZ71l| 

D 

£7.» DRAGON 
modified visions 

D 

£7.95 VIC 20 

D 

£7.95 Tl 90/4 A 

a 

ROOST en Bun 
Amur ed amy 

a 



a 



SEND CHEQUES t POSTAL ORDERS TO 

Samurj Software 
16 Clapgatp Lane, Goose Green, 

Wirjan. WN3 6RN 

or Ring Tele-Safe* 10942) 495753 with 

ACCESS / VISA N° for 

IMMEDIATE DESPATCH 




The supreme test 
of mental muscle 

A mind blowing, fast loading, 
100 screen graphics adventure 
featuring 5 different speeds of 
scrolling to give an incredible 
depth of perspective Mentally 
stimulating, strategy packed, 
visually stunning. 

Commodore 64 
Tape £795 Disk £9.95 
including VAT 





^k "^^^" *L 








f V^Meet the Challenge 





T. 




Available from yoijr favourite' 
software Retail 





Commodore classic now available 
for all ATARI machines 



Attack 



•5 




fiTq 



Mutant Camels 




>* 









A 

PRICE £ 7. f 






PLUS THE USUAL AWESOME COMMODORE RANGE 



CO FT SOFTWARE, 49 MOUNT PIFASAHT rADlFt HANTS, EMGLAMO. 





Their 


trmiD^B 


f ni»t 


nnn > i i ■ ii 1 1 ii JJ^^l^lllgiiiKg 


B 




pi 


rmm * 


g — : 






1 ^1 ^^L 


/» # ji J M /a * ! 


/ J> ■ /" « 4 f X ' * 

ji ft ? -n r « /■ . / 


^—■~ — 


™""" 1 A 



• 






FLR'tlR * OaetTl , niCH-«DM DDD2JI* 






aaO%29 o hlLh-ltOKC 



£7 95 , 

£ 9 .95 



COMMODORE 

—ifia. — Cassette 
C7T (SpcL>dlo»dj 

ATARI 32 K 

Cassette 
or Disk 

Jet-Boot Jack is fast heading for No 1 

spot in the Atari games charts. 

Because he's absolutely unique. 

Jet-Boot Jack is the space-age jet- 
powered jogger who takes you on a chase 
through the vaults of the Record Pressing 
plant, collecting his favourite music as 
he goes. 

Evil creatures try to thwart his every 
move, but Jacks special bouncing powers 
send them hurtling to their deaths! 

Sliders and elevators provide access 
to new levels - but sometimes they 
turn nasty! 

With 10 different screens and 6 skill 
levels Jet-Boot Jack will stretch your 
abilities to the limit. 

Which, after all, is what you've come 



to expect from English 
Software. 
Jet-Boot Jack and our other 
programs are available 



from branches of Laskys, Greens and 
all good software dealers. 

Telephone Sales Hot Line 
{Access and Visa) 061-835 1356 




OGojtynKl" I9SJ Engfoh Software 

written by Jon Williams and Mark Tavlor. 




THE POWER OF EXCITEMEXT 

The Lnylish Software Company, Box 43, 

Manchester M60 UD Trade Enquiries Tel: 061-835 1358 

Km in* t>( liading, iijpk-sirf uhxh arc jiaiUWcijn nH|ue»l>. 




u,ilOn)*' s i'f 5 i M 



p^one 



Ql^ 



S^wd 











n.W***'* 



,,,.,111 



IM« 



rt ncW* 



Sensational 

ZX Spectrum Offer 

from Spectrum 



ZX Spectrum 48 K 




Including 



FREE! 

Software 6 pack 

ConLuniflj ■ Compultr Scribble 

• ttimpulfr Chen * SufvivjJ Rimr 

• thequ»r*d f'*J $ Amr • H^tUt 
fort Skiing £imt m Uiir 'Chip 

Worth £56.70 



Sinclair QL 

ARRIVING SOON 



SPECTRUM PRICE 




32 -bit power. 128 K RAM 
business software . . , 
if s the amazing 
QL' 




PRICE 



DKTronics Keyboard 

see ssa ,*,«;;*" s-ss "•—-»■ «. 



SPECTRUM PRICE 




PluV FREE 4 GAMES CASSETTE 



Scoop Purchase! 

Timex 2040 

Thermal Printer for the 
SPECTRUM 48K 



SPECTRUM 
PRICE 




This top-value thermal dot matrix printer is designed especially 
for use with the Spectrum 48 K computer With a print rate of 
80cps on no-ribbon thermal paper and a maintenance-free life, 
plus SO dpi graphics capability, the 2040 really is a terrific buy at 
our low price! 



The Rat 



Cheetah Remote Action 

Transmitter 




SPECTRUM 
PRICE 






Cheetah's Remote Action 
Transmitter (RAT J Is the 
most sophisticated computer 
rnntrollei around Cordless 
Infra Red transmission lets 
you sit back (up to 30 feet 
away} i n your chair and enjoy 
the action 1 Electronic Touch 
Control system means no 
moving parts, superfast 
action, long iife 



DK Tronics Joystick 

Interface - Dual Port 

The 1 [oyiltck lit i htm art: 
lit pert nmuliUi 6789 iO ktyv Ihe ?nd port 
ttmulitn m (Jl) (omrrmid II wall run My 
M?r»w*f<- 1 Using »iryt i?W Jtitf 9. J Hiving 
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Krmptlan coTipjt>blr. 4-Any ifl«w«# you 

Wftrlt yOOD*!! 1 



SPECTRUM 
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IpirtrMP ComputK Crilr«t Din At <*inr»m«i ■ruiiimr irilti Irii IM Ipttl'vin CtlPpUlf ' mM*<tflVI'«4 »r !■««'»(' *«»•"" >l* 



Computer 
Dealers 



InSwinDff jtreul rjrt-rr,in^ i ',f|( TEuM 
*»K>HyllP DJ ALt* on in ri.|lKV»r j>fi 
^4ui plfdibf ^.ilr to Hon Ckfj^ff 
l>itllW Cra*p PlC Htaphnf C#t# 



More from Spectrum 




NEWS! 




A fabulous holiday for you 
and 3 friends in sunny 

Florida 

Including Disney World 

Kennedy Space Centre 

& Florida Keys 

WITH SPECTRUM 
& COMMODORE 

• •••PLUS**** 

£2,500 

spending money 

• •••PLUS**** 
The 10 Runners-Up each get a 

£100 Voucher 

to spend in any Spectrum store - 
anywhere in the country, 

Juil loofc Jt the iabuloui 1 it prur in thit new 

CDrnpetrtion - a. super holiday for you and i 
friend i iirainf (he tun it a and palm I reel d) 
Florid* PIUS iit incredible iJ 300 to fpwtd 
when you jjet theft 

Thtte'i *«:tt<fi( day trip* tfro to lh r Kennedy 
CW*W. the fimoui DISNEY WOBtO and morr' 

Trie ( cm petition rloiti on December 3 111 
1984 - till into your Spectrum deals* NOW jnd 
i-ullfct an entry form you could win the holiday 
of 4 lilptime' 



MICRO UPDATE 

- Spectrum's own magazine for 
home and small business computers 

AUTUMN ISSUE 

Hive you teen our MICRO UPDATE magume 
y*l J Hi Spectrum* own computer guide, 
published by ihe enperti for YOU ■ And the 
Autumn iiiue will br oul toon 

P'l packed with illuttrilbant^nd deicriptioni 
ol |uit ibltut everything you're likely to meet in 
home micro hardware, add em jnd accrlMine* 
Flu* there'* inlgirnation on currertt voftw-iri-. 
jnd hi nil and tipi from ripcrtv abou! home 
tomputinfl 

Call in Icyot" l«Jll Spettium dealer and get 
YOUR copy - 4 It ff'tat' 



Just Arriving 

New! Commodore 16 

Including 

Commodore 

1531 

Cassette 
Recorder 





THE PERFECT INTRODUCTION TO HOME COMPUTING 

Inl'odixr-n; the ne* Commode'* '* - Lh* id*im*d ir--tto I hi' ijlfVgnr a as'.*. 
the beprtnn m *m«id 

TMi brand **# mitre- tralmti a pawrrtul 16K RAM a lull piQlruiami 
hejtwafd mpeib (upHiii «rih 1?t 191^11 prm larfrfu buiiMn wumti 

Ift ill JJKiOMfHn**tA?lC ) iwith B*S7 >i eofnffijrhdl'rviudirvf j|.i[.l..:', 
plut!m( jnd O'O^'tm riMmf Then 1 a uninur HtlP kty Itul ►njhiighu r'fori 
**pn ■po^i 1* learning [9 prafiam 

it 1 j linnmiteui oew n>kio and Ifcf ipitiiuin patLtf* nnl«d»t a iom 
modor* Model MJt Ciii«l(D«l»sttmttr!Mi $**latyDarkxa<lo*(tnB 
dealer now* 



SPECTRUM 

PRICE 
ONLY 



Add-ons 



Sirrvpn"i Q&K 

Intro to hue Pt 1 
Intra to Hnit Pt 2 
Mf>S«(Ji Punter Ribbon 
WPS602 P'mlrr Ribbn 
64 M**,ic Voice 
Speech Synthetitet. 



«0.W 

114 9S 

£14 9? 

£9 95 

11Z95 

£50 00 



Sensational 

Value! 

Commodore 64 

Compatible Data 

Recorder 

ONLY 

WW 4 4 




Commodore 64 

Package Offer 




Including: 

• Commodore 64 

• A Joystick 

• C2N Cassette 
Recorder 

• 4 Cassette 
Games 




Hat all ilini *\wrw twtft *+Y*r\tim* llrm, pKii* ajfeant »H*r* nuhinf ■ |H'H) prxai (Hnq H MM at g a m j (■ v<1t I t-OI 



spectrum 



cHoft« capo 







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Instant Credit 



* There'* up to i 1,000 worth of Instant Credit 
available on 4 Spectrgm Chargecard See your 
local SPECTRUM dealer for written detail* (UK 
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Latest News 

lo' up to date newt. <nii,.-Ti*iion A often 
horn SPECTRUM tee PHESTEl pajre 
60GW tor detail 



See the super new 



at your local Spectrum Dealer - Now! 



Commodore 
MPS802 Printer 




Arriving New! 

Commodore Plus/4 



Commodore' i new, advanced Plus/a bridges the 
gap between home and buuit«» mitroi in a way 
thjt'i unique - and it a pact that s unbelievable* 

The Plui/4 featufrv beiidt. itt powerful 64K ol 
RAM memory, hat a host of features to nuke com 
puting easier 

For itartefi. there are four popular software pac- 
kages built-in - Word P*oc rmmg, Spiradsheel. 
Database and a Business Graphics, program That s 
all a ifflall businesses needs - in a budget priced 
micro 1 

Besides that, there s a HELP hey that highlights 
error* in progr.im lines, plus bull I in graphics 
advanced BMIC J 3 with over 75 commands, sep- 
arate cursor controls, a full 32K ROM and 4 pro- 
grammable 'unction hpys 



New! DPS1101 Printer 



SPECTRUM PRICE 



1542 Disk Drive 

SPECTRUM PRICE 





Commodore 
1701 Monitor 



SPECTRUM 
PRICE 




1530 Data Recorder 




1531 Data Recorder 

SPECTRUM PRICE 




For further informal uyt on the** ptodvcti \r* 5r>» 'rum, **•» 
■mjAl-hr MICRO UPDATE AiL your local dealt* lor a <.opf 



IrnlrMm < 



"t IX tfrti>g» e*<*p u ta »■ t > IHIHII «<mnf\ It*. 



Computer 
Dealers 



Of prespKIf** *r«lffi Uyeoweuid Ut to 
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AWJIMHtr tv(Alt» *n «* fulirti.* iif* 
btsn pVjinf «r<** (o lofe Ctoivd 

up rac " 

H.lrhim >lr,li ',i,iuu If <.Q*t.t'i f'17» 



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Micro Dealer UK's 



Britains No.l Weekly Software Chart 







HtOGftAM 

Mewl Sherlock 
Oiley Thornpusn 

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ILL 
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SUPPLIER 
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tDuCATlONAL 
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BBC Model B 

Package Offer 




HURRY! 

Offer extended 

WHILE 

STOCKS 

LAST 



Including FREE! 

• Cassette recorder • 5 pieces of software 

when you purchase a BBC B' from Spectrum 



The 8&C MODEL B. probably the 
rn«t flexible perianal micfocompuler 
available today. Uiirvg power! ul BBC 
BASIC, the BBC S it widely accepted as 
providing the educational lUndard for 
computer learnir». 

The model 9 Teaturci j variety of 
interlace ports aJ lowing ea*v connec- 
tion not j uit ol o. rd i nary oeripnr>rali but 
alio second processors or devices to 
give access to teletext or prettel 
services 




Cumana 
Disc Drives 

CSX 100 CS100 

C 129.95 1 159 99 



Acorn Electron 



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('immifli *Hh Ht* 

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PRICE 




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For- Money 

Shado 

Data Recorder 



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SPECTRUM 

pRice 




M#l AM itvrvi Emwry ■nrvr^r k#¥ir^i ■.■>•! i|ajnt B pirn n+ ph-pfi* k*r* 



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Up to 

Instant Credit 




• There's up to £1.000 worth of Instant Credit 
available on a Spectrum Chargecard. See yout 
local SPECTRUM dealer for written details (UK 
nsai Aland only) Typical APR -29.8% 



Latest News 

foi up lo date ncwi, mformition & otters 
from SPECTRUM - w« PRESTEL ptgr 
6001&1 lor details 



A 



A great line up from one of 

the first names in home 

computing... 

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prices from Spectrum 



Atari 800XL 




• Powerful &m RAM . Full- it rake key 
board # full tound With 3Vi ortivc ring c 

• 11 Graphk Ditpl*jr model • Full colour ^pf^HUM 
12$6 Colour* - 119 colourt can be dipl.yvrf p Hj £r. 
id one time) A^t to lee thii i u pet nt*r ml ( f o 
♦1 your locil SPECTRUM dejlf f NOW 



Atari 
600XL 



The tOQJO, lentvm * 1*X RAM. tipuiiilble [d 
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Huj 1* COtovrk. It tllphit model And 4 WOrpel* 
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tap-Tidli« 1^14 rf» ■ C0«n# It llArf tee lc 5^vtV*M» 





Atari 1020 Printer/Plotter 

Unrig 4 colour g rAphiti ind tvit the 1010 colour 
printer/plotter >i perl eel lor tinting charty, eriphi 
& even trfhtic deiiftnl Very quiet operation 



Atari 850 Interface 




SPECTRUM 
PRICE 



Etient.il foe m»re adv- 
anced work wrth their 
Alan computer!. It pro 
videil plnllcl output for 
a huge range of printers, 
and no leii than * wc'ial 
oulputv which can be 
individually programmed 
lor different purpose* II 
tome* with a eompr. hen- 
ilvc manual, power pack 
& interconnecting cable 
Id the computer, 



Atari 1027 

Letter Quality Printer 



This superb Letter Quality 
Printer prints fully- formed 
letters Just like a quality 
electric typewriter, mailing 
it the ideal word- processing 
companion for business 
correspondence. The Atari 
1027 accept * single sheets 
of paper so you can even 
use your own letterhead 
paper. 




SPECTRUM 
PRICE 




SPcCtHUM 
PPUCf 



Atari 1010 

Program Recorder 




*4i t!v«f —4 



SPfCTBUM 
PRICE 



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Atari 1050 

Disk Drive 




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Sensational 

Printer Offers 

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Juki 6100 



Super 
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Daisy Wheel 
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Tbii fibular new punter n 4 real b<e*» 
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For ,1 remarkably low price f)u (eel all th«H 
great l««turn: 

■ Oaisywheel printing • 20tpt Uv 18cpi 
Shannon Teat) * 10/11/15 or Proportional 
chi facie r tpating • Bt-dipettionil lpi<|iorv 
feed * Tractor feed or cut paper • C«rv 
tronict 41 itandaFd. ftHJlC optional * }K 
toytf print buffer 



Quendata 



liritlaat jr, EniitDxa'ur MltvrdMi\y whir 1 
piintfi orftennj (op Ottllit* pnrHnij it J 
n-'ru'k.itilj low putt »'i"l lp**0 ■« IV 
Kept yii-W 01 directional prmlinf (dep- 
end i a" iottw*r»i vj«»blr p-'ch 



SPECTRUM PRICE 



TricfoflMd optional entrj 



Other Printer Bargains 



Brother HR- 



tup*' v4tu« prrnlep Itiat printi 
on plain paper, yt} it'll IK ""■ 
ydur bpielcaie 

* Operate* on 4 itandard 
baiter iei 

* Incorporate* f ffltroum of 

RS233C 

* Bidirectional or unidirectional 

* High quality Thermal head 

■ Printi it 10c pt en plain pjpr" 
(with ribbon) or dlr«tty WtO 
thermal paper 

* Weight under Ibg 



iltrtOSM* 




GPWA 


(WW 


CPV)$ Speclium 


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SPECTRUM 
PRJCE 





Brother HR-15 

A great printer «i 1 top-valur 
price from Sprttrum Here* what 

you gel 

• Letter-quality daiiy- 
*t*tei printing 

* Between 11 and 
Itqpt 

> Si directional print 
Mg 

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tltigk theeti 

* Super low price 1 




Brother EP- 



"Tranif arming CHtice Mach 
irrti rurkj Brother 1 vlogan - 
w*h th*i* iyp*p compact 
battery powered typewriter*, 
tt'i eaiy l« we whyl 

• Top quality thermal print- 

• 4K of test memory 
1 J A4 page-it 

• Tert <enfrfnj il required 

• 14-digit LCD duplay lor 
pit- punting 1 01 ret Horn 

• Urw-lw-Hfit edit facility 



Smith- Corona D100 



Thu mperb dot malm: printep Irom 
Smith-Corona it a i-leek well-made 
machine that'll work with e«1her 
tratto' (trlrKtlrjn fed paper lloHmi 

♦an llfcoi print ipeed. with fQ 
character* per line and * choice el 
well dehned typeitylti The O1Q0 

incorporate* a Cenlronict parallel 
Interface 

Alto available 




SPECTRUM 
PRICE 



Fastex 80 

£ 225 17 



SPECTRUM 
PRICE 




Mac *# aunt tmrrr •*■' 



jn, *4>ua p*wA» fc-l*r. Htafclnf * IwfHi btkiI rarmt at tmn a* r**»| 1* r»"n IkOl 










Up to 
Instant Credit 




• There}'! Up trj £1.000 wbrth if Intlint Credit 
available on a Spectrum Charge card Sec your 
total SPECTRUM deaicr for written detail) (UK 
mainland only) Typical APR '29. 8% 



Latest News 

for up to date new), information t» «Mei» 
fism SPECTRUM ■ tee PUISTtt pa<e 
40D1B1 for detail* 






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AVON 



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BEDFORDSHIRE 



CNEITERIlElB 1* Cww*« Cw*i. 
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SURREY 



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YOUR COMPUTFR. NOVEMBER 1934 35 



^^THFUNIQUE 



When you buy your MSX computer, you enter a new 
dimension of Home Computing with software options on 
disk, ROM cartridge or cassette tape. 

Peripheral options cover colour monitors, printers, disk 




The MC 7GB 

personal computer 

from JVC is a new MSX machine 

designed for total compatabifity between other 

MSX machines and all MSX sottwear. A highly advanced 

64 K machine, the HC-7G8 has three display modes offering RF f 

composite video and RGB outputs, The HC-7GB MSX personal 

computer from JVC is the final word in home entertainment 



£275.00 



JOYSTICKS 

For extra versatility and sensitivity in 
control there is a range of high quality 
joysticks available from these famous 
manufacturers offering such features as 
double trigger and suction stability pads. 



SANYO 

MIY 002 £12.95 




EB 



IICJ6I5 £12.95 




SANYO CTI'3132 

M push button colour 
television 




^^ / 



The ideal budget pnce television for 
your horn? computer umt. Great value 

for money al o j ff\ g\m 

SANYO dt I / V.V* 



SONYPKN-C4 
HOTTER/PRINTER 

This Plotter/ Printer produces red, green, 
blue and black images and characters. 
Pen replacement is easy and it takes a 
wide choice of paper sizes including 
FREE ■greetings pack' software. 

SONY 3t^4","5 



RJNGTELEDATA 01-200 0200 FOR DETAILS OF YOUR NEAREST STOCKIST. 

ANYTIME DAY Ofl NKkHT 



drives, light pens, plotters, joysticks, data 
recorders and RAM cartridges from many 
top name manufacturers in the home 
electronics field. 



Their tf performance offers you 
unrivalled graphic and sound quality 
together with outstanding simplicity of use. 



•5 



Till INC KIDIRlt 
HSI IE K<Ht Mil) I 'MONITOR 
STYLE COLOUR TELEVISION 




This superb, higfi technology 
14" monitor style television has earned 
a high quality reputation as a reference 
in the field of home computer 

monitoring it 
features a fulU7 
function infra 
red remote 
control housed 
in the front of the set. Other 
sophisticated facilities include direct 
audio/visual terminals in/out and 
smoked glass fitter for perfect picture 

d fisher £269.95 




TOSHIBA 



SP&fe 




SANYO 
i>R20E 

l>VIAKE-(OKI>KK 

An AC only recorder styled for computer 
use with all controls conveniently placed 
on top of the machine 
for ease of use. 



SOFTWARE 



SOFTWARE 
STARTER 

E*AC'Ei As a special 
introduction to your MSX computing, 
Toshiba offer a pack of 5 exciting computer 

gamester ONLY £30 

Pack consists of # 3D Golf • Trick Boy 
• Clapton II • Pyramid • Polar Star 
(Offer only available while stocks last) 
Individual games available at £7.95 each 
SCaNY KOMC \KE UIEH.I 
SOFTWARE A range of sophisticat- 
ed Sony Rom Cartridge Software is 
available at prices up to £19.95 



£34.95 




SANYO 

DKIOI RECORDER 

Specifically designed for use with personal 
computers, with phase shift switch, 
speaker monitor and 
AC/DC operation. 



TCM737 

DATA RECORDER 

A mams or battery operated recorder ideal 
for use with your £ y |j Qff 

home computer dt*Jj7»"3 

JVC HC-RIOS DATA 
RECORDER 

The stylishly designed HC-R105data 

recorder is an example of a machine 

produced to offer superb user 

convenience, exceptional performance 

parameters and reliable data transfer. The 

HCRlOSisa high speed 

machine giving 

very short 

access 

times to 

data. 



£89.95 



£34.95 



hMI.IIIS 

KNIGHT OTHELLO £5,95 

Tne class* game rtow on MSX. 
WOOUS VIPER £5.95 

Eat the men but (toil Me your 1*1 
EXPLODING ATOMS £5.95 

A sl ralegy jjame lor tvm players 
SMASH OUT £5.95 

< : ? or joystick control 
CAVE ADVENTURE £5.95 

Negotiate (he labyrinth oi treasures 
M S X DF MON5TRAT0R £5,95 
Reaaze trie potent sat erf your MSX 
MSX GRAPHICS £595 

Denionsirtile your e<ce»efii MSX 
graphics. 

TYPING TUTOR £5-95 

Score by response to Racing keys 

JUNIOR MATHS £5,95 

Teaches cnikJren to add and muflipry 

MSX BASIC 

TUTORIAL PARTI £595 

learnMSX Basic pi DRfammnB, 
MACHINE CODE IANGUAGE£5 95 
Wnte your own maehne code 
programs 

KNIGHTS MAM. UST £14.95 

Store addresses and print labels 
BUDGET ACCOUNTS £14.95 

Accounts with ipec iat forecast 
feature (AvaiWe on dis* or cassette! 

EtUMA: 

OftJLLER TANKS £8 95 

Fighf ritumetsfire brealh Hectonem 

BINARY LAND £&95 

Urate the couple in the 
conplex maie 
RRE RESCUE £7.95 
Rescue the mce from 
a burring buddmg 






ERtCATHt 
aOATERS 

£5.95 
Recover treasure Itonutw eW 
floaters. 

DOGFrGHTER £695 

Blast enemy a*cratt out of the skies. 
HYPER VIPER £7 95 

Avoid venc*rwu$vrpers in "* labyrinth 
SPOOKS AND LADDERS £6.95 
Trap spooks m notes & escape the 
mme 

COCO IN THE CASTLE £6-95 

Rescue the marten from the kings 

C9Gt)C 

CRIBRAGE £595 

Ray 6 card tnbbage wtti your MSX 

HOLDFAST 15 95 

A local poWics strategy game 

HOME BUDGET £1495 

Ccflt/rjfyoor home mcome and 

expenses. 

WDPRO: WordprocCiWr £29.95 

A professional quaWy vrordprocessor 

DATABASE £1995 

A professional database program. 
ZEN MACHINE CODE 
PROGRAMMING SYSTEM £19.95 
Generate Z80 assembler language 
programs, 

KUMA FORTH £3995 

A tuty structured setf extending 
language 

COMMUNICATIONS WTTH 
VIEWDATA £1995 

Commuriicate ttv ougri your modern 
SPEECH SYNTHESIS £6950 

(includes hardware card) 
Typed in words can te spoken 



Ql KKSIIVA: 

FRED £7.95 

Fred's adventures under the 

pyramids 

BOOGABOO {The Flea) £7.95 

Avoid a deadly dragon niSKJe deep 
caves 

ANT ATTACK £795 

■ r:# ine anc«nt city lighting m 
THE SNOWMAN £7.96 

Butd a snowman *ffld Monsters & 
Flames 

GAMES DESIGNER £9.95 

Modify enisling or wnie your own 
games- 




AMPALSOIT: 



^"CHESHIRE CAT 
EDUCATIONAL SERIF 
programs ** be made abatable lo 
MSXuscr* 

ABOVE ARE ONLY A FEW Of THE 
MANY PROGRAMS AVAILABLE 
FOR YOUR MSX BY MAIL 
ORDER Oft FROM 
YOUR LOCAL 
STOCKIST 



DONT FORGET TO ASK YOUR DEALER FOR DETAILS OF CREDIT FACILITIES, 
EXTENDED GUARANTEES, ETC AVAILABLE ON CERTAIN mMS - 



r/pj! 

AT HOME WITH TECHNOLOGY 



I-^HETJNIQU 



T 




In the confused world of M^ computer technology the unique 
MSX System has been adopted as a common standard for computer 
production by at least 16 of the biggest and best names in home 
electronics . This major breakthrough in the development of 




I 



A64K MSX Computer with an p*rlusivp hmtl <n 
Personal Data Bank (firmwarp) Thi* handy 
fat ility enables you to enter store rer al> and 
i id date all kmds of oersnnal information such 
^s aoDOintrnpnts. addressps. telephone 
numbers, etr Operation is simple, with 
instoir f lons'appearmg on the screen every steo 



Dalafromthp Personal Data 
Bank can be saved on any 
data storage facility or on the 
INIQI'I HBI'WRAM 
< \K I KM M.I, 




available tor 



£39.95 



KVI4W 14 MOMTOH S'lTlJ, R ISH 
KIMO\(OMKOI IklNIIROX 
COLOUR THKV1MON 

wrth front mounted RP £"> lO OC 
terminal dUAu^"."^ 



HBIW1 MICRO HOWY-niSK I 'NIT 

esup to -<*S0K hytes of information on a 
tsity r nnnerfed to me Hit Bit h v 
ostngonenfth* 

expansion slots. 



£349.95 



The Superb SANYO 



ft i m rm 



£299.95 



Thissnohistfra'ed piece of equipment 
offers all the advantages of 54 K MSX 
compubng {complete with 
4 programme starter pack} 

Plus a unique optional feature Ml TIWH 
I JGHT PVN. This provides you wrth 
unlimited ftatr and flexibility m colour 
gra phic s design , This feat ur e comes 
complete with a software package 
containing some mtngurng 
graphic facilities v^ wV 




CI{P.f(llMM4 
MONITOR 
STVIf COIOtiR 
1 DIVISION 

\n\ib removsbte smokerf 
glass screen for 
higher definition. 

£199.95 

mi row 

IICHTPIN 

£89.95 



RING TELEDATA 01 200 0200 FOR DETAILS OF YOUR 

MIVTIMf OAV 0*» MWHT 




EAREST STOCKIST. 



compatibility in hardware and software. To cater for 
all home computing needs. Axis have selected in 
these pages an unbeatable, topvalue-for-money 



monitors, peripherals and software for you to choose 
from. "We believe that when you discover the benefits of 
MSX computing no other system will do" . 



(1 [TOSHIBA 




The Star Value 
TOSHIBA HX10 

The first MSX computer to be introduced into the U.K. 




Offenng superb 

faf 1'ities ^nd outstanding 

value far th* first time u>« 

en+hirya^ 6dKt?ann 16 cokuir graphics RF 

video and audio connectors,, plus pods for 

printer disk drive and data recorder (Including 

starter pack software! £yji\ OC 

140* MONITOR 

STVI f C Ol Ol R TO EV1SION 

Fhe perfect partner for the HX 1 h providing 
ej^elient picture and VIVO OC 
sound aiiohrv dLlt»"«^F3 

HX-P7W PiOTTt R PtflNTt'Jt 

family ronnprtpd to the HX ] rhrnugh the 
printei irttefface This printer features image 
anri crwarter clotting in 4 roloyrs red, 
green, blue and Nark making it ideal 
for cotourW graphs, pie and bar 
charts Rotting speed is 285 
^tppsper second 



£249.00 



DONT FORGET TO ASK YOUR DEALER FOR DETAILS OF CREDIT FACILITIES 
FXTFN0FD GUARANTEES ETC AVAR ABLE ON CERTAIN ITEMS 




AT HflMF W!TH TKCHtiOinCY 



your terms. 



OU - BASIC IS BEST OK! 




£o counter your correspondents in the October issue who 
run down the ever popular Basic, there it another side to the 
lie To take a smalt sample there are 23,000 Open University 
students with home micros, a third of them teachers and most of 
the rest in business and industry, with the following proportions 
34 per cent BBCB, 15 per cent Spectrum, hi per cent ZX-81, 6 
per cent Commodore 64, 5 per cent Dragon, 4 per cent Apple, 4 
per cent T199, 3 per cent Tandy, 2 per cent each Vic20, Electron, 
380Z, Atom, Pet, MZ80 and 1 per cent or less e»ch of Genie, QL, 
Otic and others. They all have Basic as their lingua franca native 
language, which is easily converted from one dialect to another as 
Prestel, Cecfax and Basicodc have shown; impracticable for other 
languages. 

Indeed universal Basic common to all has Goto (stuff the 
pundits), Gosub, For To. Step. Next, If.Then, so omit Procedure, 
Repeat. Until, While, Wend and Else which arc not common to 
all. As (hey never teach you in 20 years, when you get down to it 
all, computers Large and small only do three principal things;— 
they Loop, Branch and Gosuh — equivalent to brackets in 
algebra; the rest is arranging input and output, As simple as that, 

A recent survey among those OU students shows that 99.6 per 
cent do not want full time careers in computing but do "want to 
use their micros quickly and simply 1 '. So that means Basic, which 
after ill was designed for that very purpose, so that the scientist, 
mechanic, executive or teacher could start programming within a 
day to help their job without a lot of elitist fuss. 

ti is also clear among those OV students that they have 
discovered Tor themselves, away ahead of aca de m ic staff, that 
programming their micros in Bosk improves their studies and 
greatly increases their understanding of concepts in Maths, 
Science, Technology, Engineering, Social Science, Education, 
BttftfT and Industry; and thtir time is at i premium. 

The currently fashionable and transient structured 
programming and top down design — sacred cows if ever there 
wis one; and what ever happened to yesteryear's fashionable 
algorithm — taught with Pascal in the OU's main computing 
course is a dismal failure with 51. 6 per cent dropout or failed — 
compare with 75 per cent normal pass rate — that is, 1 163 
students gave up costing £l million of wasted resources of the 
taxpayers money. If the students were aircraft we would ail be 
grounded; and if the staff who wrote the course were fool ball 
coaches . . .! 

It's comparable to the Army who ordered new boots and 
provided a sample, and then found they had 900,000 left boon 
only; with severe condemnation from the Parliamentary Audit 
Committee, 

With "programs that generate programs" already on the wing 

there will soon be no need for these tedious, elitist and idiot 

jjuhions in structure and 30 languages; they will be as dead as 

yesterday's punched cards, in your lifetime We Ire still in the 

Tiger Moth stage. 

Sharpey, 

OUStudent, 

Sttntx 



will find that on running rbt demo 
program the Report Cade OlOO 
appeuv To rectify [his problem (he 
following Poke* should be carried 
oui la the machinc-codr 

POKE ir403.es 

POKE 17421.82 

POKE 17435.V 

POKE 1?4S4,82 

POKE 17466.82 

POKE 1748* ,82 

POKE 17485.82 

POKE 17496,82 



AMSTRAD PEEK 

tn answer to Matthew Leach's 
f letter in Your C&mpuitr 
September 1964, it is possible to 
peek the Amstrad CPC-464 ROM, 
but this must be done from machine 
cod*. The be« way is io disassemble 
the ROM with t machine-code 
disassembler. Switching the ROM in 
with the following machine code 
routine. 
ORG4O00H 
CALL B900H 
CALL B908M 



JP start at mac rung-coda 
diauMmMar 

The ROM can now be dis- 
assembled but if you return to Banc, 
I be ROM it twitched out. 

M.J. Dyot, 

Liistt Sullnn, 

ChffJwr, 

ZX-81 SPRUES 

iki tih reference to my Sprite 

Iff program for ihc ZX-ftl in the 

September issue of >W Computer, n 

is bug-tree. However, owners at 

ZX-dls with the unimproved ROM 



POKE 1 7676.82 
POKE 17629.32 
POKE 17896,41 

Maiachy /Jrt'ft'r, 
Co. Tyrant. 

HEX AND BUGS 

/am the author of the Dragon 
Disco Light* program Yaw 
CempMUr, vol 4, No, 9. 1 would like 
to pom! out that my name » Kph riot 
Roc u printed, Also I believe there 



QL: THE BBC STRIKES BACK 

/must protest at the gross inaccuracies and untrue sections 
of Kathleen Peela second look at Sinclair's QL in the July 
issue. I quote ". . . In hardware terms, the QL currently 
represents the ultimate in technical achievement in the (under) 
£400 range ..." 

The BBC instantly springs to mind as a £400 computer; here 
is a comparison in hardware terms. 
QL 

Monitor and TV ports. 
Up to 80K ROM. 
Up to 640K RAM. 
Up to 64 on network 
2xRS - 232 - I9200/960Q max. 
2 x joystick port. 
BBC 

Monitor and TV porta. 
Up to 256K Paged ROM, 
Up to 16 megabyte RAM 
through Tube and 16032 
second processor. 
Up to 256 on network. 
1 i LRS - 232 - 19200/19200. 
Improved RS - 232 
4 channel, 8 bit A/D convener. 
I Mhz But, 
User port. 
Tube interface, 

The BBC is 1 .5 tunc as fast as the QL. Now, which 
computer is the ultimate in technical achievement? 

The QL may not have been on the market long, but the 
situation between the BBC and ihc QL currently is: 
QL BBC 



IEEE 


Under development 


two available 


Modem 


Under development 


many available 


Teletext 


? 


yes 


Mhz bus 


? 


built in 


User port 


? 


built in 


Monitors 


Special one needed 


Any * 


Serial int. 


2 x RS232 


J i RS432 


Fastest TX 


19200 


19200 


Fastest RX 


9600 


19200 


Network 


Does not work 


Econet, E-net etc. 


Max nel user* 


64 


256 


IBM upgrade 


no 


f* 


Teletext display 


no 


yes 


Sound 


? 


4 channel, 8 octave 


Max cols 


S 


8/16 


Max res 


512x256 


640x2*6 


Function keys 


5 


10 (40 with shifts) 


Teat 


05x25 


80x12 


Fastest data 






transfer k/sec. 


0.08 


up to 62.5 


Speech 


no 


yea 


languages 


Super Basic 


Basic* Forth, Lisp, 



Pascal BCPL. 
The QL at this stage is totally outclassed, in ever)- field. 
Given time, the QL will improve but for my money I'll take 
the BBC every time . . . 

Stephen Corcoran, 

Ayttibury, 

Buckingkamthirt 



40 VOUR COMPUTER. NOVEMBER 1 984 







is an error in the hra code; ihc line 
headed 244% should read: 
B10BlO?7CKJaO?09B 
Aa t no longer own t Dragon 1 am 
urt»We 10 liit this, nui ir thoiild Mm 
be correct 

ffflii GanitfT, 

Hani Cfaevt, 
StocMparj, 

NO COMPLAINTS 

With reference to Mr 
Dcur Bullcr 't Seller in the Sepi- 
ember issue, 1 feci honour-bound to 
rake exception to ih* suucmcni ih*i a 
computer's bug* are in direct 
proportion ro the complexity and 
versatility of the mK-hiiK 

I have owned i Mernotech 
MTX-512 since November lu! vejr, 
and, to date, I have found no bugv 
Ferhips Ihc ait nf i 7.-90 A CPU. in 
Mr Bu lien's opinion, places it 
outside i he scope of a "verutite 
machine", or perhaps the inclusion 
of three lanKuajr,cs resident in ROM, 
plus i from panel display and I o^o- 
style graphics command* mate il • 
little limited m hit opinion? 

DJ. W F.ngknd, 

Wiltthirt. 



25 
30 
35 
40 
45 
50 



AT 



Lines KM 70 of September'! 
ZX-t-X p ro frata were lefi out 
Thej irr mp^lted hesow: 

5 REM BARREL BARRAGE 

6 REM MISSING LINES 
10-170 

10 CLEAR 
15 DIM DS (7931 
PRINT AT 6,24; 
POKE 16418,0 
FOR A = 1 TO 14 
PRINT " "; 

NEXT A 
PRINT " 
"; ATS. 16; ■ ■; AT 6, 12. 

55 PRINT AT 22.31; " "; AT 
21.31:" " 

60 PRtNT AT 0. 0; 'SCORE 
OOOOOO'V HI: rjOOOOO'V' 
LIVES 5 

65 PRINT AT 18,22; 
0.0; 
70 PRINT TAB 13; " 
80 PRINT TAB n. 
90 PfliNT TAB 13: " 
100 PRINT TAB 13: " 
PRINT TAB 13; " 
PRINT TAB T3; " 
PRINT AT 1.19; ' 
FOR A = 2 TO 4 
PRINT AT A.19; 
NEXT A 

RANDUSR 17130 
STOP 

Mtny people may have a problem 

wKra typwi m the tame, "TrKi. 

Chest" *fc*ch was pubUsbed m the 

October HtUC of Vaw Computet 

In luting I, lino 130 and IW 

contain some ninny eharanen which 
Mir difficult to obtsm The lines 
should be entered » fellows 

■Type ihc line tn is shown with 

tpsee* instead of ihe omened " V 

chancier! 

■Cursor bee* over ihe spaces, press 

CTRL sad PAS On snd replace ih# 

spades wiiJi diiited "M" characters 

■JPrrt.i Return 

The Rem lUlementi in Sisliru I ihum 

be typed in, 



DIT0RIAL 



110 
120 
130 
140 
150 
160 
165 
170 



■H H H' 



Ttltwg trains that only work on itraight 
tracks, Bristol Brabazons and tailed perpetual- 
motion machines don't get much of a look ia when 
it comes to histories of great invention* of our time. 

Accounts of technologies! advancements ire 
always about people gelling it right first time or 
stumbling across something important like the 
theory of displacement in the bath. 

It would be a shame if cbroaident of home com- 
puting paint a picture of soaring achievement when 
we all know the real landscape is covered with low 
points littered with dodos. 

For ■example, whatever happened to the Haven 
colour board for the ZX Hi which offered 
Spectrum colour at a price you could afford? Our 
review in the July 1982 issue found thai this 
product didn't quite live up to expectations: "The 
screen went fuzzy orange and no cursor could be 
seen . . . Waves of a darker colour advanced down 
the screen and rippled the whole display." 

Haven plucfcily pronounced this problem 
"unusual", and suggested thai the colour board] 
performed differently with different TVs: "This 
was confirmed by testing the board supplied with a 
Bush, a Sony and a Ferguson. The poor-quality 
picture mentioned was obtained with the Bush, but 
no colour picture could be obtained at all with 
cither the Ferguson or the Sony." 

However, an alternative was being advertised in 
the same issue: "Now you Can add a coloured back- 
ground to your displays!" What silicon trickery lay 
behind this breakthrough? Yes, you've guessed it: 
"High quality PVC In either blue or green. Only 
£2.95 + pp per pack of two." 

If these hardware pioneers stand head and 
shoulders below the rest, then Warp Factor Eight's 
popular add-on reached new heights: "I jft off into 



"83 with Hi Stak. It makes your computing easicr t 
faster, more reliable, less exhausting and simply 
more enjoyable." In in day the Hi-Stak was the 
latest in lumps of plastic. For £3.95 a pair the Hi* 
Stak stick-on legs fulfilled the claims made Ibr 
them in the adverts by propping up the Spectrum 
to a more ergonomic angle. 

But software disasters have also played a major 
role in the alternative history of computing. 
Leaving aside Space Invader — where you end- 
lessly destroy a solitary alien struggling down the 
screen — let us rum to another chapter. 

Bridge Software's Vic Invaders, renamed "The 
massacre of the saucepans" in our June 1982 
edition, was too easy: "The invaders do not 
advance, there are no mystery (hips, the base at the 
bottom zips along at rocket speed, and the invaders 
do not speed up when only a few remain " 

Alternatively, there was Petals Around The 
Rose: "a number guessing game with a difference 
— it does not tell you the rules" or N erne's 
pontoon program which did not recognise 
pontoon, 

Computer manufacturers should also take their 
share of ihe credit. Remember Sanyo's enigmatic 
PHC range which appeared in October 1982 and 
disappeared again m November? Or the Grand- 
stand Tutor, the Tc*et TX-8000 and the Comx 35, 
built around the RCA 1802 chip that was more at 
home in early guided missiles? 

If you would like to nominate a product which 
you feel deserves a place in the home computing 
house of horrors, write in to "Oil-white Heat", 
Your Computer, at the address below. We'll 
publish the worst of your entires, libel-lawyers 
permitting, and find suitably awful prizes for the 
winners. 



How to write for Your Computer 

We called this magazine Your Computer precisely because we welcome your 

rvs, tips and hints and even your 1 1 iti ism pi machines and boftware m general 

If you would like 10 see your name in print, whether on a Sof twate File program or 

a full blooded article, here is now to qo about it. Ideally, at) articles should l ■ 

typed double spaced on one side only of uniform sheets of paper. If listings can 

lie clumped directly from a printer you can always use a friend's or user group's 

this minimises Ihe risk ol erroi In a perfect world a cassette would 

pany the article. That considerably speeds up the checking process Not 

only do you gel to air your own discoveries and opinions, but we will even pay 

you for the pnvilege. We pay C3b per published page that's as it appears in the 

magazine and includes illustrations. 
Why not give it a try ? You have nothing to lose but your postage. 



ABC 



154,334 

January dune. 1984. 



Editor 

TOBY WOLPE 

Assistant Editor 
MEIRIQN JONES 
Software Editor 
SIMON BEESLEY 
Production Editor 
IAN VALLELY 

Sub-editor 
PAUL BOND 
Editorial Assistant 
LEE PA DOOM 

Editorial Secretary 

LYNN DAWSON 

Editorial: 01-661 3144 

Subscriptions; U.K. £12.50 for 12 issues. 

Pnrnad M Gran fnuai «w an prapnMon 

Audi i— rr§m i MM Mi at Ltd. Ouadtao* hbvm-. Th» 

QutOWH. S«W*V Sutra* SM3 IAS. Ttt 01 411 MB 

Takwf paM. aeOH BIWtfSG ISSN 03B&OBB5 
Prmt#d by ™*ars>d* Pints LMt« Whitsutt*. Karri, snd 
I by ietSWC* Ltd, London ECJ 



Advertisement Manager 
NICKRATN1EKS01-661 3127 
Assistant A dvc Moment Mo nag or 
NEIL MARCHANT 01-661 B64 8 
Advertisement Executives 
NIGEL BORRELL 01 661 3660 
JULIAN B10LAKE 01-661 8468 
KAY FILBIN 01 881 8484 

Northern Office 

RON SOUTH ALL 061 872 8961 

Advartimmom Secretary 

MAXINE GILL 

Classified 

LUCY Q'SULUVAN 01 661 3036 

Publishing. Director 

CHRIS HrPWELL 

Group Advertisement Manager 

SHOSHAN GAJJAR 

Your Computet, Quadrant House. 

The Quadrant, Sutton. Surrey SM2 5AS 

C Business Press International Ltd 1984 



YOUfi COMftJTER. NOWMOCT: tea* 41 



Icon worshi 
to Island m 

Ns* programs rarely ciuk excite- 
ment in the Ycmr Comfwirr office but 
The Music System from Island 
[ jogit bad BBC enthusiasts •shnekmjt 
with delight u they danced nound 
the filing cabinets. No* only Lt The 
Musk System i be most advanced 
rate program on the market it ahw 
uses Macintosh- stvtc icon graphics to 
control the various elements. 

Part 1 of System comprise* a 
Primer and an Editor which allow* 
you so word process with mm 
writing notes on stave* and 
modifying existing runes. The Editor 
bod (bur voices including on disc 
percussion, )4 sound envelopes, 
ebofet of notation and automatic 
barline creation. 

The Printer generate* four-part 
musk manuscript from your fik* m 
long u you have a Centronics 
printer. Pari 2 has a Synthesiser 
which creates 30 tone* which can be 
simultaneously edited on screen and 
j Keyboard which m addition 10 
■llcjwing you io use your QWERTY 
as a piano keyboard alto allows you 
id record four tracks, There is alio % 
sound and sore, library. 

Each pan can be bought separately 
on easteiie for £13 oi together on 
disc wtlh a separate library disc for 
£25. The due system also ha» a 
Linker module which allows you to 
combine single files Into one piece. 

This is Island's first computer 
program 4e*f»ic the fact that the 
company has had a dozen pro- 
crammers slaving; away over hot 
micro* for the last year A 
Commodore M Version of I'he 
Musk Syst em t* on its way amongst 
other products. 

Putting a real plastic piano 
keyboard on the &*" gives 
Commodore's Music Maker an 
immediate appeal. For £ 30 you 
get the synthetic ivories 
together with a music bock and 
a tape or disc ot software 
which allows you to simulate 
eight voices with instruments 
such as guitar, piano #nrf 
synthesiser. Set rhythms tor 
bass or percussion backing are 
&i$o avertable 




At the touch 
of a button 

While speculation continued on 
whether Sinclair would upgrade the 
Spectrum or go for a cut down QL — 
1 "there arc as many opinions on whal 
should follow the Spectrum as there 
are peop [e » Sinclair" says Nigel 
Scarlc — there itemed hi tie chance 
that be would remember in include 
an on/ofT switch. There is not even 
one on the QL. So in the short term 
TEC of 24 Victoria Road, Broms 
grove, Worcestershire, are selling £5 
plug-in on/otT switches which clip on 
the top of your Spectrum. TEC 
claims that this positioning does not 
nlcrfcre with interfaces — but the 
Alphacom 12 printer, for instance, 
will not (it with the switch, and ihc 
really bad news it thai not only does 
the ftew Spectrum Plus have no 
an/oft switch bur TEC switch will 
nw fit either 



YashicaYC 
64 MSX clone 



Cai lino its first home computer the 
YG-64 it a certain way for Kyocera io 
get its new MSX micro into [he 
pages of Your Compitlrr. Kyocera 
whsih mate* the Tandy lip held 




I 




| 


« 

w 


uli3 


TOP 20 


9mm 


Company 


■ ■ 4-1 

NHCiNni 


QArabun 


Maacaolor BBC 


Ntghta 






□teach 


US Gold 


CBMS4 


tsaad 






OtecatHon 


Activtsion 


CBMW 


! jDocathtan 


Ocaujn 


CAM 64 


l"f ficowntef Ncvaoan 


At»n 


QFoolbol 


Addictive 


BQC 


Manager 


Game* 




□Ft* 


Aardvark 


BBC 


DM 


Miaomooa Scwscttum 


Throttle 






QiaOi 


ihw 


Spectrum 


and tfia 






DJ«S*t 


SoftWflrO 


Spectrum 


W*y 


tojact* 




□Umlaut 


Bayonet 


Spectrum 


MdnaajN 






CM*** 


Snclah 


Spectrum 


Pbaal 






| PHm 


Micro Uu 


BBC 


Otympld 






OrWtfwy 


Grnrnin 


CBMM 


Mo*» 






□P*ye»» 


Uaaaat- 


V«:2o 


Shoopor 


tronte 




USabmWutf UIWMle 


Spectrum 


OSetabWa 


Lrttte 
Gam* 


CBM&4 


TOrrudO LOW VO»l«j « 


Spectrum 


LmI 






QVaahala 


Laoand 


CBW&4 


,'_TZa*»an 


AcVantuiw 

Intw- 


Spaetrum 



computer amongst others is selling 
the YC-64 under the Yjjhici name 
which it better known mi hi* country 
for ehbhb. The computer has the 
standard MSX bag of chips together 
*ith iOK video Ram and 64 K 
system Ram. 



Electronic books from 
Tandy will run on BBC 



Om or Tire strangest stalls at the 
Motor Show to Hitmingbim'a 
National Exhibition Centre it Tandy 
and West Midlands County 
Council's foini effort. In case you 
need documentary evidence you can 
win an "I'm no Wally" certificate in 
a road safety competition. 
Somehow this is supposed to 



I publicise Tandy's new electronic 
books which plug into the Tandy 
Colour Computer, or with an 
adaptor to a BBC Micro. The books 
have touch sensitive pages. A £20 
mutic book called Professor 
Promote and a guide to the planets. 
Solar Explorer, which costs £1? are 
the first two ixle 




«EMOl__ 

New Sinclair looks like a sawn-of f 
QL, performs like a Spectrum 




SimjI jlIKt. mew Spectrum Flua or + 
as he prefer* ro call it »» nothing more 
than i Spectrum ID i lie* QL style 

bin with realist! keyboard and » met 
button, plus tii piece* or mAwk 
St rabble, Make a Chip, Chequered 
Flag, Chew, Vu-3D rod the Tuword 
2 wotii processor. 

'Hie keyboard h described as "pro- 
fessional" hm despite company 
claim* that Sinclair vn "very seen 
to hive • robust keyboard" ours had 
been amateurishly put together — 
several keys had fallen Oil' And weie 



rattling around the case. The price » 
£180 and to encourage people 
the Flm rather than the standard 
4oK Spectrum (he free software deal 
with the standard Spectrum will be 
discontinued in the next few week*. 
The good flews is I hit thousand* uJ 

Pluses have already been built so this 
tittie there should be no "coming 
won — 28 days and counting" saga, 
16K Spectrum production it 
increasingly aimed al overseas 
markets but Sinclair claims that there 
are no plant to stop production of' the 
standard machine Sinclair will be 
making 200,000 computer* a month 
thii winter. 



Million pound bait 
one that got away 



"EvKgyamrs jumping on the one 
million pound bandwagon" is 
Commodore's excuse lot launching 
Spirit of the Stone — a treasure hunt 

Not the right 
Habitat 

Imawnf BtTisr* a computer sprayed 
a tasteful primary colour or perhaps 
covered in raflur Habitat caif led Out 
a feasibility study but decided thai 
computer fanatics were boring 
people who were not prepared to pay 
mure for trendy looking micro*. 

Expansion is 
kids' stuff 

RtMFMBiH My Talking Computet 
— now there is a new £19 I20K 
expansion module for it which 
contain music, sentence making, 
digital time, alphabet colour, shape 
and sue amongst us programs. 



for i he Commodore 64 with ■ 
potential seven figure prize for the 
winner. 
The LIS program and book set 

Cutltaim ■ Series of an.jde games 
which give* Clues ro the whereabouts 
of 40 ralumen hidden on the lilt of 
Wight, each containing a single 
diamond. Commodore is pulling Mp 
into the royalty fund for every 
cassette sold — the fund wilt be 
closed when all the raJumcn have 
been discovered or when the fund 
reaches £1,000,000 or tailing that in 
199J. Program crackers may well 
have an advantage over those who 
sttck by the rules. Shot! of the Isle of 

Wight slipping silently below the 

waves of the Solent during in 
earthquake the lalismen will be 
found well before 1993. 

The million pound target is 
equally unlikely to be met -- 
Conunodo^e would tune to sell i.toie 
copies of Spirit of the Stones than all 
the 10 best selling computer games 
so far put together 



Sinclair is also marketing a £100 
ripjiisiou system for the Spec (rum 
This consists of a ZX Microdrive, 
Interface 1. and four cartridges 
including an Introduction to Micro- 
drive use, two "business" programs, 
Masierille and Taiword Two, a 
blank cartridge and two of the best 
tun pioKMiiis Ant Attack and Came* 
Designer 

Unc linal advantage of the Plus is 
that is that it is the first Sinclair that 
can stand on its own feet 1'he 
Tetraclabk leg* give ym a proper 
keyboard angle- The original 
Spectrum had none and the QL'i 
continually fall out. 



Be there at 
blast off 

SPAtJE SHUTTLE computer mal- 
functions permuting three kids will 
win a chaftLt to watch a space shot 
tmin Cape Canaveral rial year 

Monitor makct Mkwritt 
sponsoring a Cub British Schools 
National Computer Challenge open 
to teams of three contestant* who 
must be 16 years old or less, The 
winners will have an ill expenses 
paid five day trip to Florida 
including the shuttle launch, 



Christmas is cancelled 



Ciuu&tmas is CMKtUJttt this year 
and that's olliaal. Well the VW 
CAtmpvtfT Christmas Fair U anyhow. 
The Fair which was scheduled for 
November 30 through December 2 



at Olytnpia has been cancelled 
because most of the games and 
computers which used to be mail 
order are now available through high 
street shops. 



From the outside it looks like a perfectly normal £40,000 Aston 
Martin Ttpkford Trekker van but another way of looking at it would 
show you that it i& the most expensive Apple Macintosh on font 
wheels At the centra of the van tits a Mec with printer surrounded by 
itte sort of etiesaoties every computer user hes come to expect - 
radio phones, drinks cabinet, raised roof viewing platform, sink, 
stereo, drinks cabinet and swivelling leather chairs 




QUALITY GAMES 
WANTED FOR 



•bloby- -computet -gomes. 



SPECTRUM, ATARI 

CBM 64. VIC 20, 

DRAGON 32 

SEND NOW! 



£1.99 £1.99 E1.99 £1.99 £1.99 £1.99 £1.99 £1.99 £1.99 £1.99 £1.99 £1.99 £1.99 £1.99 £1.99 




ANNOUNCE THEIR OWN POCKET MONEY RANGE. MORE FUN AT LESS PRICE 
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«4M .#• fat. — . -,., 

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DRAGON USERS SEE US AT THE 6809 SHOW NOVEMBER 
All 'game* are obtainable from the company @ E 1 99 plus 50p postage & packing or from computer and vtdeo shops everywhere Also 
newsagents whore you see the Slush Puppie sign. Send SAE tor full Nat 
* CMt * > Jc«#i « avadWHi '»om *V H Sraum Hniw and fat mayor irorti M f S. 90 

BLABY COMPUTER GAMES, CROSSWAYS HOUSE, DEPT YC, LUTTERWORTH ROAD, 
BLABY LEICESTER. TELEPHONE 0533 773641 TE1EX 342629 JRHHG 







COIJRSEWINHER 

llic Punltrs Computet I^ukhuti 

i Dl Hsftt |\Si K JJ--.^ «i«W)uk LhtptwcraiMwi 
.nfifvrcr :.• &■> i \h nifx net ihr txijfcjmk*! 
• < ( IV H SPS 1 S \ h K , ( iii«A t a d#*h*w r«J| , 4 Jeuucd 
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I he ira ittiiluiK i<» dpi v jjnj rr-tiram irkj rllniitf iht 
Jfjr.1 ii drUlkd !>* CJtti M 
Thn in*nm«rti m; in- Jnf^inl >« 'he v;rrn ji ja% <une 
• The pt i «x*ni *rui v**\ ihew Ii. ho vtrnturad wtlh the mull i 
of (he int thnr* uuunpi , u jruna peve irtJ ■» r^th 1 ^itiiJ 

• t.Ul RSI.y. IVSI KawnptMnl^uiikhii. jwnertui 

• fiuvrd wiih deuited umnituHi Unkki 

Price £12.50 alt inclusive iVMiithiH*Miui HmffiHOFr 
AiwUatbr! 

SI'H IRIM 4K (Hf B IIWU)lK:)Hi.M l l^l^lS.il11.i li;ik..M\HI «K 

POOLSWINNER 

Ilw L Inmate Potils Prediction I'ruftntm 

• PtK H SWlNM.lt M rhc hum ajphrMKMtd [whpMd. 
■hI errr pruJixol II linnet * laiiittrir vmh ji» . ■* 11 inauivc 
d*l«htte 

• t jn be wed (or Vumlrawv L)i j* t, Avuni «»J J fame* 

• The ifcor— 1 1 mnmn* r»»w flXBO rmlsht* ' itHrjniru*^ 
Imlball I It uf^iiiev wlunutiiikLk n mulu iume in. 

• The pm.w prrdhtHwi loffnub can be Kl hv the uwr Thn | 
tlMrws development ■at wur wn muq «c method 

• Paritoar n ompkfr with praertrn . dauiajK- mkI Jrtafcd 
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Plicc£lS.00aJlisiclu»ivc MMBPUTl MSMTCN kmihjsui ivjsi 
A«wbMetw V'l ' K B« H QQMM0D0«£ M, DRM 

WVLtvltrlk, \ I AKI «t N»te atu k* AMSTKA!^ l.A #H, Ul\t H 

: Inm iloikn « iIvax mum .J p»* ; from 





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37 Councillor l^ine, i Ihcddlc. Cheshire. 



S> 



Phoor06M2S7425 



"THE FRIENDLY TO USER STORE" 

FOR THE BEST COMPUTER 
SUPPORT 

SOFTWARE *HARDWARE*REPAIHS 

SPECTRUM* CBM 64+VIC 20 

AND QTHER MACHINES 

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LOUGHBOROUGH 

LEICS 

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Ato s*s u* *r the (qUovmq markers! 

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Tuasday 

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Friday' Sdiurdoy 

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Sunday 

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(Ring for Dotattol and mora to cornel 



OVERSEAS Associate Company 
MtCROWARE SYSTEMS (PTEI LTD 

01-66. ORCHARD PLAZA. 
160, ORCHARD ROAD, SINGAPORE 

OVER 2 H YEARS IN THE 

HOME COMPUlfcH SPECIALIST BUSINESS 

AND STILL LEADING 1HP WAV* 

MICROWARE 5 - s «- p ^ s ^ o ' 2 J e i 2 T"" 



VOUftCOMPUlEfl NOVEMBER 1964 






I could 

do 
that 



For Ihta month's 
competition we would like 
you to write a Basic Fill 
routine II should accept 
two inputs — giving l he x 
and y co-ordinates of a 
point within an enclosed 
shape — and than proceed 
to fill In all the pixels within 
thai shape, To make your 
task sealer the routine only 
needs to handle convex 
figures — thai Is. figures 
whose outlines do not "turn 
trt", 

Perhaps the simplest 
aproach to the problem is 
to move from top to bottom 
filling In horizontally up to 
the left and right outline. 
Another possibility is the 
"prarsa-ftn!" method where 
you spread out in ell 
directions from the centre, 
keeping a record of filled 
pixels in an array 

Whatever approach you 
adopt you w«M need some 
way of detecting what is on 
screen. Spectrum and BBC 
owners can use ine Point 
command white 
Commodore owners will 
have to Peek the screen 
memory. On the ZX-81 you 
csn> u90° 

PEEK 163S6 * PEEK 2»* 10397 

to find the start ol the 
display file. 

In awarding the £15 prize 
we will be looking for 
programs that do the job 
quickly and in as few lines 
as possible. Obviously If 
your machine already has a 
Fid command we expect 
you to Ignore it, 

September's competition 
asked you to write s 
program which would 
conduct a conversation 
between you and your 
machine, Some highly 
amusing conversation 
pieces were sent in. 
Typically the dialogue took 
an abusive turn with the 
computer heaping scorn on 
human intelligence. Most of 
these ware, unfortunately. 
loo long to print. All hough 
the programs kept within 
the 20 line limit their Data 
statements were massively 
•ong 

Instead we plumped for a 
mini version ol Animals by 
Andrew Babblngton. 31 
Glen Iris Avenue, 
Canterbury 




Starting out in home 

computing? First Bytes 

is for you. Just write to 

Your Computer with any hardware or software 

problems, no matter how small or simple. 



Robots 



Kvulyiouy kmows what a robot u. It 
u j iiuchute with \uira and kf» and a 
tinny voice. IT it a. really food* it 
mi^hi make ii into the android das*. 
Thai, anyway, is iht pknirc moat 
people have from fUm* and hooks. 
The reality it slightly different, 
niuunh there ate &igns thai it will 

become fUM a* ektitmf, over UV flOT 
few i"ntft 

Starprtiingty, the idea of a robot hat 
been around for more than 60 yean. 
The- word was Him used by (he Czech 
playwright Capck in hi* play 
Rfntitm't UmvenaJ Xotvtr. Robot 
comes from t Czech word meaning 
"work". The next landmark was in 
the 1943a, when the American writer 
lux. Asimov formulated hi* (luce 
l.iwi nt Robotic*: 

■ A rpbol nuy [Kil injure a human 

bring, or ihrough inaction allow i 
human bene, to cotoc to harm, 

■ A robot mutt obey the orders 
given to il by human beings, 
except where such orders conflict 
with the First Law. 

■ A roboi muil protect its own exist- 
ence at long as such protection: 
does not tunllki with the First and 
Second Laiws, 

Robots became; a reality in the 
1950a, They usually coraiaied of 
hydiaulically control led arms thai per- 
formed a fairly simple task again and 
again, without variation. 

In many ways, these flral robuis 
were simply glorified pieces of 
machinery thai you mighr find on any 



F/R.ST /.#£*> OF- 
'K.OBOT/CS. . 



Andrew Babtxnglon s wining mint-wtKMi of Animals 

IOM DIM JU49121 

HO LET ftttlt-'fon* 

tae LET N»l 

ISO PRINT "Think of an anlul...' 

I« IF A«<Z*H><>" THEM SOTO »o 

ISO PRINT " Ii It I -)A*(N> 

1*0 INPUT X* 

170 IF X«-"vn- TICN PRINT " On* up to «•**" 

I BO IF *»-- y «*- TKfcN SOTO 170 

l°0 LET A*(?aN)-AtrNI 

2O0 INPUT ' Than Nhat la 1 1 - I A* I2*N+1> 

210 INPUT • Ol v# m* a auMtlcnn that -uuJd b# tr 



-inaiz*N*l>t- but le Jala* (or a "ieai3 




230 PRINT 
III" .. . " 
2iO INPUT MINI 
240 GOTO IZO 
2SO PRINT ' ■|A«IN) | 
2*0 ltrui ia 
270 LET N-2*M * ABS ( I M ■ y>s" > 

2eo if Ncase then goto mo 

7W PRINT * Too such, I quit! 



assembly line. The btg breakthrough 
came when the newly-developed 
computers were hooked up to robots. 
This gave them t certain life of their 
own and brought them one step closer 
10 the all-singing, all-dancing 



A true robot has three basic pro- 
perties. Apart from the mechanical 

(continued on page 47} 



YOUfl COMPUTER. NOVEMt)£R 1984 46 



More 
games for Your 




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Software 



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46 VOUR COMPUTER MOWMBCfl 1BB4 



(continued ttatn paper 4St 
side of things vou nerd wm son ol 
sensory device to iell you *hw that 
tnechanam j* doing, for example how 
far it K» nioted hi it m Then you 
need • computet io analyse lhat 
inlbimjiMK, decide wlut to do en the 
basis of i U and instruct the rnevhaiucal 
puts accordingly 

I he same tsum. principles appU to 
house robot* I o ^uatily liw member 
i>hip of i he t obot club, they need some 
kind of mccharuca] action controlled 
by a computer thai an react to the 
outside world Mechanical action 
includes simply moving. 

Perhaps the simplest example* uc 
some toys from Prism These mkrp- 
tobou respond io sound or uifn-red 
bght by hopping or wheeling along. 
In this uvr thr nmhaiUvat element u 
slighi, a well as being pretly racks*, 
io the computer power ft also soull. 
But ihey do fulfil alt (he retirements, 

More soprutticaicd home robots 
include models like Hcfii. Tope, and 
JUEHX 1'bey an? jiLmi rathcT more 

»M|MMMfaMT joittnf up 10 tli(M' * 
robotic* h*s i kjiij' win 60 £u hclittr 
you can buy the equivalent <r kn 
tlui'i tlvu Spectrum ihmo 

Jopu i» >liilltj . i - 1 ■ i r 4 i robot 

i.eral than a (rue robot It has no 

lndcpendem cnmpuutkirial power -on 

board, bui is cottfniiled vm mtr#-(ed 

signals tron, a standard Apple II 

Speech 

synthesis/ 

recognition 

.Mo> t mi i.Mi- < :o.VtPl i Kits will make a 
none at jnW il vim li y h^d trtHJiijch 
Some, like ibr HHi Mkiu, ham ■> full 

nm ehaai nutac io serenade 

. iih M-ikuig your nucro talk n> a 
link ftudct, bu( tiy no eocasa 
hMfaMaabk 

Ai with ir»M (hinge to do with com 
ptHCJta, ihe icirei u, lo spoonirrci it 
Word* air bioken Jown mtu then 

baaac .oni|uiwm» I he bbkh 
uiodtHc* «*ii or ihcvr, one aito 
Boothes I he rmujuunctti*! elements of 
■is wc vailed phonemes - 
hrfhc the saying Joo'l pboncmc us. 
we'll phoneme you". 

For example the word "speech" ha* 
five: one each for *"s", "p", "«", "i" 
and "ch" fi is relatively straight- 
forward io pf oajram a micro to accept 
word* broken up mlP ibcM elcnwni*. 
«id then to produce sorrwthini; tike 
inc light Miund I rtr ci!n. i Li the "I 
atn a lijkk uiri o( naicc S|?crv.h 
sii mm* Jie jvjiUblc for puny 
micro* mcloding I he Spectrum and 
BBC. 

To net ■ micro to produce spoken 
oulpui directly from the word itself is 
mulIi haiJei Ai ihe nwnKni only 
retativdy Ur^e kystcm can even begin 
to try lo tope »uh ihc problems 

These arc easy to describe arid dil - 
Iscult lo solve. Batkfllly the ipcllitif; 
system of the English language is a 
me&4 Just couskder the group of 
kiicts "ough*' How is i compuier to 

vAipe W|(h pniHUMi-wtiiira # dtllWrnl 



computer. Topi> hat a fount!" 
brother railed Fred who ls e\tn 
dumber aren r thev M> He en lunt 
about nuoj^c tu hold a pen and draw 
wjth il. whwh i% hardly in the KJ 11. 
dpai 

Hcio aud RH "iX ait very unuha to 
e*kh other ir. iji^igi Ibcy both tu*> 
an on-tKhuo i>lla.csm'.. ■ robot mm 
and, ■anosai 

>ensoi and a mm pcoaca KB SX also 
h» busnpei Ucvives around in box to 
detect collnton* Both .uptime?, un 
he prowtnimcd lo respond to tced- 
badL from the ouiude woiU 

hor example, you i.ouid get the 
robot io move atound a room, irww 
cuv ring il» way aa it bumps mto 
otHcets It could then store the U>otii 
at the .-..it. jtu trtt iibjetts, ino *o 
avcajd iheru iti ihr tuiurt- Oi poo 
could program d to route towanti the 
hrtghtest hgbi in the victmiv <>i rm 
to the nearest huiiuii being, w* 
uifra ial iti tM.it* [g. dctni Ilea 

oil Evenruail) robott ».otud or usto 
ir the nom* 4* uiiiitnig win. r 
rcapuiKbng to (he sltghirt» noise. 
Iighi, <h heat fritm hurnan bodies 

I'ru big ttre^kthiougn in hontt 
rnbors will ^mt when iney at* 
reipond n Kuiiuini* Alter 

dl, tt » mtt much tun having ■ 
doevervth- i1 v«mi hr 

. = i ji i 1 1 1 1 1 m Ik nine , il i- i iu 
lltv lew Heps n^w rieeti iaken in ihts 



BEGI 

■0 



ducctKHi. For example Heru has i 
Knee output iacihly which ifttn 

*!c "«rt>rdn Hid kenteri-' 

! oe home robot has vomc wag 
bctou U hid rterydiv siehl, bur 
v.xne peupk Ihink hat ihc si 
now o rathei Like thai ui mtctws about 
(0 years *#u Iih ttwdd* iltw an 
around ate -rude and not vti j , i 
lul, rtlil 'A'tth i^it*. fm.'\: iy. So tai il 

has been mihoyiMt who tun ntmghi 
them, i^.hm . .irucnl m $K* down Iu ihi 
nut), bote* juo t hip» lest! K.h trir 
iiexi rfRtcraium ill inachUKs voutd he 
a> I heap and ai usetul as micros ire 
today 
11 you war* m net i wt of (h« 
illUi tflnrd ihe 
1 1 ,w»t rot rtej" m kat i«mi. tneje is 

lenaatsve l"oi yum vear» QtfW 

in* mcrasi 




Ikiuruhing ui iho vuuiur) alto 
abroad. A nuLJOtisoust is a inuti 
powered device wiih tensors and an 
oo-board .ompuici ih# ma o ru:d 
iw *u> »tb i Mima li ». m 

i build your owu, vw wuld d< 
worse than loilow the eutupic ol Abrt 
Ottne>, the L' K '« leading n(h.io 
ujuLuei lie uses plywood bats* ano 
aioiui ifK m«iu intra ie«i Jt 
jiioiilii Maui! comptmn Invntty 
il in tu .i: i-celed 

o(t 

A Ilih'riHTKiuM fcOt lSU eulK KI is IWiO 

each yeai at the liarl\ Onin Com- 
puier I'jir us (iim AUn usually win* 

irtl like Lthallenging hir 
can tioiam more oti aits ot the t 
imnf competirmn by wrmng io |nhn 
Kutiiig<iin- DcpaniTKm of Ele 
and Fwmno*.k btiKtuverui^. Porta 
muutn HolyteehruL. AngMMu Ki>a«J. 
Foitsinouih KJ) iUJ Bncrj i-, tree 



r 



rm 50&&Y / pari*? (fit* 




at '*thoogh rough, "bough 

"ihotough ' and "through"' - not to 
mention "hiccough", ptonourtced 
"hjccup"> 

The answer a that the computer has 
to do it ihc way we do it, by ihe 
comexE ol the su/rouading words 
I bus itaJ* us into the icalms ol Acd- 
ticial IriieilipeiKe. and an area where 
i search is only lusi beginning to pro- 
duce results. Clearly, though, the 
benefits could be enormous For 
example u would be easy io adapt any 
ptogiaai Id work wtih (he blind. 



giving verbal tiKuagea oi warnings li 
would he pparibk io \^an a punted 

din Jiueul of book and have ihc 

"lead" it oui. doing away with the 
need for eusily Braille: books. 

1 1 a computet could give spoken 
messages, it would obviously be aa* 
vcuteiu if II could also obey spoken 
(.onunands 1 he diUkuttse* here are 
even greater than wtih speech syn- 
iheus. 1-nst thcic are technical prob- 
lems of picking out she speech Irnm 
die background noises, Slurring is a 
ptitokm loo Vou may trunk you say 



Altu.* and Avia Oui most people 
aoiaauy say somxlhing neatri Alrica 
rand Asia" l-uiallv , and wont, are 
ha^t Ihe problems of amttifiuny did 
you say "there" or "their "* Again, Use 
only aiawet is io endow the muro 
witlt a cat uluucJUgerke 

Kaiher than go the whole AI hug, 
hen a a half-way house. You can 
u am a computer lo recognise a parti- 
cular voice, saying a limited number 
oi particular phrase* You do ihu by 
repeating a phrase *o;ral times, and 
letting (he micro take i kind ol audio 
avnagr ol me sound Ihu ts stored 
together W«b the tppropttalc iwu 
nund it repracnls When a spoken 
phrase matches ifu> average closely 
enough, (he mmo mil respond by 
ing oui ihart cotrunand 

Apart from the duTicultiea ol di»- 
tinguisiung tuiuhi sounds, there is 
akto the slight problem that this 
syttcrn only responds io the basic 
wofds it know*. So "delete" and 
"ddn'l delete" will have the same 
effect on your precwus Hies. Which is 
why you really need to give youi 
mic ro that bu of i i.i elligence 



*OU« COMPUItH NOVEMBER t9c)4 47 



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«B YOUR COMPUTES. NOVEMBER 1 984 



If you have 
anything of 

interest to tell us 
about your 
computer club 
why not contact 
us on 
01-661 3144. 

Local 
news 

Leytonstone 

The Easl London Amateur 
computer club has catholic 
tastes, it caters for all 
micros, from Nascoms to 
Apples. II meets on the 
MCOftd and fourth Tuesday 
of each month. The venue 
Is the main hall of the 
Harrow Qreen Library. 
Leytonstone. Interested 
parties should ring Fred 
Linger on 01 5S4 3286 

Orpington 

State-of-the-art Orpington 
Computer Club can be 
conlscied on Mailbox No, 
068931263, or further 
details can be accessed on 
Ctutopot 600 on frame 
800841142. However, il yw 
technology is still firmly 
rooted In the past you 
could always trying phoning 
Tony Self on 0689 31263 
They meet at Christchurch 
Hall In Charterhouse Road. 
Orpington every Friday. The 
club cetera tor a wide range 
of machines and interests. 

Congleton 

Congleton and District 
Computer Club meets on 
alternate Mondays at 
"Heather Brae", Sandbach 
Road. Congleton. Hardware 
and sol t ware discounts are 
aval table lo members and a 
wide range of protects are 
under way using BBCs, 
Spec (rums and 
Commodores, Contact Tony 
Hsrratt on Cheshire 6758. 

Chinor 

A new uaer group has been 
set up in tt» Chinor end 
Thame are* of Oxfordshire. 
Users of all ages and 
machines are welcome. The 
group organises lectures, 
competitions and games 
evenings. It also hopes to 
start a library. It meets 
every other Thursday at Mill 
Lane School Hail, Chinor 
Further details from Bryan 
McAtley on 0944 $2428. 



COMPUTE 



Lee Paddon finds himself 
depressed in an out-of- 
season Southend-orvSea 
until he discovers the 
secret of BBCs Elite at 
the local computer club. 
Perhaps he could give 
Simon Beesley some tips 
— see page 60. 

SouiUFKn on ISA can be a 
depressing place out of season, The 
still-lit illumination* glare 
mournfully down on any remaining 
tourists who nughi luvc gw ihc 
BODtb wrong jiiJ null he fouod 
wandering aUmg the scafront. 

Just a few yards along the seafronl 
from ihc pier Hand) the BipUnaoc 
Hotel, lookiTip suspiciously like a 
large pub. 1 1 » also the home of 
Southend Computer Club which can 
be round by coraing "Go North" 
after you reach the bur. 

Robin Knight is the chairman ami 
one of the founders. The club w» 
formed back in the low-re* black-and- 
white day* of 1979 when Acorn 
Atom's and TRSBO't were ihc staple 
diet The club meets every Monday 
night irum i 30 lo 10. JO and has 
now grown to 86 member* 

There was. neatly « much noise 
coming from ihc club *i ihe 
neighbouring amusement arcades. 
Decathlon is popular at the moment 
and several young Olympic hopeful* 
were furiously waggling lorsikks; 
del 'mite I y noi a game n be 
undertaken without rigorou* training 
and a thorough medical beforehand 

Simon Rush was showing a clean 
pan olhcal* or a deadly pair ot lasers 
to all comers in Acornsoft's new Elite 
game. He had attained the diny 
heights of competent, and a pretty 
gruesome array of accessories for hit 
vhip with three days continuous play , 
"Well, two-and-a-half [tally, my 
Suiurday job got in ihe way", Hi* up 
lot budding Elite players was very 
muvh down to earth "Save lite game 
whenever vou duck", cvctl the ten 




sometimes need a quick spol of 
reincarnation. 

Robin Knight explained "a lot of 
games playing goo on al the moment 
but we hope some more tenon* work 
can lake place once we move to our 
new venue at the Rue he way 
Community Centre, They've got 13 
BBC* hooked up to an Econet 
syucm. We can alio lock the game* 
players into a separate room while we 
get on with the more serious stuff in 
peace and quiet," One of the club's 
first jobs will be to write some 
educational software to exploit the 
teaching potential of the Econet 
system and possibly help other 
member i oi the ccniic take an 
interest in micros 

Enough of future plana. At the 




The Spectrum section in full swing — ffte game's frte thing. 



moment the club struggles ilting 
with a collection of black and white 
TV i and a large toolbox Howcvei, 
this lack of equipment was made up 
for by ihc members who seemed to 
favour disc drives 

This apparent affluence might 
have something to do with Steve 
Sullivan, one of the club's founders, 
who run* a local shop called Kstree 
Software which oilers generous 
discounts to dub member* 

There was a notable lack of 
copying going on, Robin Knight 
explained "At the last meting we 
decided to outlaw it. We simply 
switch off the computer of anyone 
teen doing it, This seems 
punishment enough aa it lakes a fair 
■mount of patience and hard work to 
copy a program,'" 

Away from the games players, Slig 
was demonstrating his dexterity with 
a screwdriver and a soldering iron, as 
a tape recorder underwent 
emergency surgery By the end of the 
evening the patient was alive and 
well again and demonstrating a 
pro gram analysing Stig's ttate in 
contemporary music in terms of a 
line wandering around a telly screen 
driven through his Speclrum't car 
lOCket "1 started mending really old 
tape recorders but my Muni decided 
I should get up to date and so the 
bought me a copy of Your Computer 
— the first time." Needless to say 
Slig has never looked back. 

For mote in formal ion about the 
dub, contact Rohm Knight on 
Southend on -Sea iJ$747 



TtXlfl COMPUl fcR NOVfcMBfcH 1%H4 49 




FOR DRAGON AND TANDY USERS 

SATURDAY 17TH AND SUNDAY 18TH NOVEMBER 

10 A.M. UNTIL 6 P.M. 
THE ROYAL HORTICULTURAL HALLS 



If you own a Dragon or Tandy colour 
computer this is your show. 

The first ever show organised in the 
United Kingdom for these machines. 

All the very latest hardware, software, 
interfaces and peripherals will be there* 
Your chance to get up to date, try and buy 

all " 



We'll also be organising events and 
competitions with great prises. The 
manufacturers will be staffing advice 
centres to help with all your queries. 

Exhibitors will have special offers on 
their products so you can save money too! 

Large gangways and comfortable rest 
areas will make sure you can see 
everything and sit in comfort when you 
want. 

This will be a show for the whole family, 
plenty to see and plenty to do. 



If you want to miss the queues just clip the 
coupon below. 

Computer Marketplace (Exhibitions) Ltd. Part 
of the Rush worth Dale* Croup, 20 Orange 
Street, London WC2H TIP. 



HOW TO GET THERE 

The Royal Horticultural Halls are just off 
Victoria Street a few minutes walk from 
Victoria or Parliament Square. 

Buses 1 1 , 24, 29, 70, 76 and 88 run up 
Victoria Street. 

Mainline stations; Waterloo, Charing 
Cross and Victoria. 

Underground stations; St. James park 
(District and Circle lines), Victoria (District,] 
Circle and Victoria lines). 

There is an NCP car park in Abingdon 
Street, a few minutes away. 



Tot Computer Marketplace (Exhibitions) Ltd, 20 Orange Street, London WC2H 7ED. 

PJeoie rush me taty) adult tickets at £2 each and faty} tickets for under sixteen year olds at £1 each for the 



6809 colour show. I enclose cheque to the value of £ 

Name 

Address 

Postcode __ . 



B0 VOUft COMPUTER, NOVEMBER T984 



Telephone 



. OWr if m| rfQflrtrH nam* or Motor 0*0 VO. 



, 



5 

B 

, ? 



Star* 
chart 



Battle of 
Midway 

PSS 

Wargsmc 
CBM-64 
£9.95 
* * 

A Hawed attempt to 
recreate the famous Battle 
of Midway. All you have to 
do 1$ sink the four Jap 
earners and they all troop 
oft the map, victory to you" 
Well, that's Ihe Idee, So 
how come after sinking 
lour carriers you then gel 
nil by (heir aircraft and 
lose the game? Some nice 
touches of presentation, 
easy to order units Eastern 
Front fashion, but fatally 
Hawed as a simulation. 



H.E.R.O. 

AcUviSion 
Sttoot-'em>up 
Spectrum 
£9,99 

* # * 

Assuming anyone ever 
goes down a coal mine 
again, you may be called 
upon to rescue them 11 
they gel trapped. Our hero 
has to drop down mine 
shafts, blowing up a wall 
here, zapping a nasty 
spider there, and so on till 
he saves his man. Sounds 
simple enough, and it is to 
start off with. However, 
each successive shaft is 
harder. In some the walls 
are deadly, in others you 
can"! even see the walls I 



Ancipital 

Ltamasot: 
Arcade Adventure 
CBM-64 
£7.50 
* + 

A silly scenario, A crack 
squad of AnclpllaJs have to 
go around breaking down 
walls whilst various other 
things try to stop them, 
There are 81 rooms in all. 
Fast, with good graphics 
and sound Nol lerhbly 
original, but enlivened by 
the usual Jeff Minier 
humour The way you 
knock down walls changes 
Wtttt every room, movement 
and firing is a bit tricky. 



SOFT 



Interdictor 
Pilot 

Supgrsoft 
Commodore 64 
Simulator 
£17.95% 

# * a> 

Sl**MLATO* AttKLIIlNMKH* n«d IM> 

lunger feel eanhbound. bxcnUcm 
PiltM claims id fc'vc you ill ihe rhnlk 
and spills of zapping aliens plus have 
all the usual feaiure* you'd expect 
from i simulator. 

Be warned, however. This is not 
the sort of game you Ret to grips with 
in in afternoon, the 50-page pilot's 
manual gives lhai away. 

In order to keep down ihe body 
CSUIU, you ire thought fully provided 
wiih i ibnatoor wuh which in 
practice dipping around thr cosmos. 
The simulator even altow* you to 
slow things down and freeze the 
enemy white you wall up lo hint and 
shoot him, This thoroughly 
unsporting ttpiion didn't item in 
wwk on The review copy. 

Still, being unsporting and 
underhand it something you learn all 
about in this game. You havr a 
device called a iranvponder which 
Idsadfta you, and you ir> your 
enemy. However, intcrdiclors have 
the ability' to change their call sign. 
So the idea is to slowly move up to 
ihe unsuspecting enemy, then give 

Deus ex 
Machina 

Automate 
Spectrum 4BK 
Unique 
£15.00 

# * + * 

DO mi start to review I his 
garnet With most, you say ii* similar 
to A, or an enhancement of B, bul 
ihiv name h ium unlike anything 
you've teen before, there :>, no 
n Stt ts/X petal 

The plot goes along these (irtes- 
Just before the last mouse on earth 
died, it climbed into this machine, 
and had, well, a slight accident. You 
must, as some kind of life force 
within the machine, guide thij 
accident through to becoming some 
son of life form, Weird, huh? All thu 
is dene in synchronisation with a 
sound track which features such 
luminaries as John Pert wee, Ian 
I Jury and historian and nuclear dis- 
armament campaigner E.P. 
Thompson. John Pen wee is the main 
narrator, and guides you through the 
game with a son of space-age version 
of The Bard's Seven Ages of Man 

During each of these seven ages, 
some Ul will .ivuil your little an 
as you guide it through life. How 
well you cope wilh your ia^k hi 
reflected in your rating which you 




him a quick blast up the rear shield. 
Works every time, unless that is he 
doe* ii to youl 

like any simulai of worth its salt, 
there are pknry of controls to play 
with and instruments to watch. You 
have 20 controls to play with and a 
darling array of instruments which 
tell you everything from the ID. of 
the nearrst ship to ihe day you last 



CbaUkfcd unit ulickfWUU 

Once yon ihink you've mastered all 
I his m the simulator* you get on with 
■ he real thins:, life and death slufT. 

I hving zapped all the bad guys, 
now you get the hard part. Between 
you and getting some shurcye ui the 
local spaceport are the automatic 
space station defences — and boy. are 
these lads jumpy. Your course, speed 
and transponder most ail be comet 
or ii's curtains. 




take on with you 10 the next section 
of the fame. Eventually u k hoped, 
you will mH>e it to the end in some 
kind of shape, expressed as a 
percentage, 

The graphics in this game are quite 
outstanding, considering the limit- 
ations of the machine and really add 
io the overall flavour of the game. 

Automata have without doubt 
produced something which is 
totally original here which might 
fust give the software industry the 
creative lull it so badly need-. 
vcusl, nmvricisl and nun-violent; it 
should have come with a 
l"i I, C -approved' label. No longer 



i* it the mind-numbing business of 
going about slaughtering anything, in 
our path, before it kills us, ihe 
mentality induced by many games. 
This game n trying lo show bow ihe 
computer game can be a stimulus to 
the imaginatmn I hjrt hope ihey 
don't start interviewing computer 
programmers like pop stars: "Could 
you explain the meaning of your 
latest game to our viewers" Ruff 

]( certainly is a very enjoyable 
game, however, it may no* be the soft 
of addictive game you play hour after 
haul 

Few compuEcnuk* will be able to 
resist playing C iod with Ineir machine. 



YOUR COMPUTER. NOVEMBER 19S4 51 




You no doubt know our name for 
disk drives. WeVe spent years 
on research, development and 
marketing a range of drives 
second to none. A logical 
extension for us was to 
introduce diskettes. Only when 
we found a 5 'A" double density 
diskette up to our stringent 
quality control requirements, 
and at a price that made sense 
to the end user, were we ready 
to put our name to it. 

This is the result, a diskette 
of top quality, complete with a 
plastic protective case for the 
ten-pack (we also sell them 
individually!) together with 
index stickers. 

Cumana diskettes are available 
now, as single or double sided 
40 or SO track, from your local 
computer dealer, Dont trust it to 
chance, go for the best name in 
memory . . , 




3 



UMAMA 



L 



\ 






/ 




& 



\ 




CUMANA 8 



<fe 



» 



The best name in memory 






Cumana Ltd,. Pines Trading Esteie. Broad Street. 

Guiidlord. Surrey. England, GU3 3BH. 

Tel: Guildford (043 3 1 571666 Telex: 659380. 



^U 



Star* 
chart 



Star 
Commando 

Terminal Software 
Amstrad CPC-4&4 
Shoot emup 
£895 



If MAT is an example Of the 
evolution of a same, I'm afraid 
I have lo say that Terminal 
Software's Star Commando is 
an example of relative 
degeneration. Trie highlights 
of this program for me was 
entering a sector on which no 
data was available and being 
attacked by a bunch of giant 
Strawberries. This i$ yoghogrl 
mailing on the grand seals. As 
a conventional stiool-'em-op, 
It's fine. 

The screen shows a head- 
on view of attacking aliens, 
together with power, score 
and danger level displayed in 
a square al the base of the 
screen. The long-range scan 
option is just a disguised way 
of opting for different screens 
and strategy does not come 
into It Frankly it's hard to sea 
how a galaxy run by giant 
strawberries could be any 
worse off than it is already. 



Roland in 
Time 

Indescomp 
Amstrad CPC-484 
Platform game 
£3.95 



Roland In Time from sunny 
Spanish software house 
indescomp is an Amsirad 
original. Sadly it's not all that 
original and the graphics are 
nol as interesting as the com- 
pany's implementation of 
Roland on the Ropes — or 
Fred, as he is known on the 
Spectrum 

Atimewarp facility 
catapults you into different 
frames of a I adders- and levels 
game. The frames have titles 
like "Roman Fori", "NJorl's 
Dragonboar, "Seen my 
Baiilsta?" and "West of Dome 
9". You move around picking 
up power pills and frying not 
lo bump into nasties. 



American 
Football 

Argus Press Software 
Spectrum 4§K 
Sport simulation 
£9.99 



Amiricas footsall simulanoiis 
have been around almost as long as 
Lunar Landers and Hammurabi* 
Kiwmulh, ihis offering from Argus 
Press i* simply a refinement of ihii 
botfly a1(f classic with some nice 
touches and pretty graphics Thrown 
in. 
The instruction book COniams tile 

basic rules for American football, 
alone with a phrase hocrk to explain 
the essential llang of the game to the 
ignorant I.imtes. Then on to the 
game proper with an explanation of 
what to do The game can be played 
a^aini! the computer or by two 
humans. The all acker selects a play 
in seem and then the defender cntcfi 
hi* play. By comparing the two, and 
introducing a random element, ihe 
computet works mil the results of the 
pliy, whiht you watch your best 
qujintrhacX getting ftitteneJ on 
screen 

The tactics seem to be to Fry and 
run for the first few "downs' lo see if 
you can make the ten yards required,, 
and only reson to a risky pass if 
thing* look desperate. Of course, this 
is exactly the tactic your opponent 
will be expecting, so you baric to 
spice it up with the odd unexpected 
pass now and then. 

The screen display is very helpful, 
showing ihe pitch iisclf, ihe score, 

Countdown 
to Meltdown 

Creative Sparks 
Sp&Ctrvm 48K 
A f cade Adventure 
Adventure 
£795 

* # * * 

SOfltSTHIMd rn.vTinnisi. has 
happened at the local nuclear power 
Mjitiun, there's been a bit of an 
explosion and most of the human 
staff have been killed. However, 
then are still a bunch or aggressive 
androids hanging about trying to 
stop your bunch of android* from 
doting down the plant before you all 
get hlaitrd to kingdom come. 

Your job is made no easier by the 
tad that someone has inadvertent ty 
lost the plans so you don't know 
where the C«e room i*; alw the 
radiation level is rising all the lime, 
which si no fun, even for an android. 

A description of the scenario 
hardly doe* justice to the game. 
There are two thousand room* 
spread over eight levels., You have 
eight androids, only one of which 
you can control at a time. Each of 
These androids has different abilities: 
strength, miclligen.ee and so on. 

These abilities govern I he case 

with which he can use the various 

i equipment scattered all over 

the place. Each android can only 

carry eight pieces of equipment. 



SOFTWi 




time left, yard* required and 'downs' 
to go. There it also a help screen in 
case you forget the two Verier eft 
the particular play you want, of 
which there are 1 5. After ihe match, 
you get a whole bunch of statistics, 



which I'm told arc analysed in even 
more excruciating ttciail than cricket 
average*. Thi* game may well go 
down well Stateside, and h >* 
ptobably going to remain the besi 
version of this old classic, but for (he 
true English man, it ma}- soon lose us 
appeal. 




The game avoids the tedious 
adventure game "suck it and s.ce" 
approach by telling you how to use 
each piece of equipment; none of (fab 
"try every verb I can think of, 
something's gotta work" stuff that 
we normally have to resort to-, 

THe graphics are excellent. 
Although the huge number of room* 
I achieved by having a limited 
number of room types, thi* is 
enhanced by the "Star Trek" type 
door* and lifts. Some of ihe doors are 
broken and have to be fixed. This can 
be awkward if you've got a dumb 
android on your hands; the 
unfriendly attentions of the reactor 
guardian* do not help either, 

Thi* is a well-designed game 
which will hold us appeal even after 
you've found the reactor, Getting all 
the stuff you need together is fun. 



Sultan's 

Maze 

Gem Software 
Amstrad CPC 464 
Maze game 
£8 95 



Gem soFTWAnns Sultan** Mut 
give* you the same down the corridut 
view that you get so RomiV* M> 
Monster Maze* but ha* more of a 
myth attached to it. Apparently ihe 
Suiian of Baghdad was robbed on a 
vi%u io England. His personal 
champion pursued the robbers into 
Hampton Court mut. You have io 
retrieve all the icwel*, steering 
yourself around by the numeric 
keypad- 



YOUH COMPUTER, NOVEMBER 1984 53 



f r 




'1 


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In space no one can hear you scream 




PllUtlf*t 






MlMMMlA 



CAPT/UH 

Seta. BtftMtb*. Caua^foui ■ 

f itaWI Ln9P 



EHGMCEHWG OFFICER 



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{HOHEEnHowncED 



THE CRE\ 

Personnel 
files foltov 
yours to 
command 
wellalmo* 



wind sames 

SPECTRUM 48K CBM64 




Hainan I ifuij> I 



Feafur/ng 

f/re unique 

Personality Control System 



No. 1 Golden Square, London W1R 3AB, Telephone 01-437 0626 



NEWS 

oa eo 
rs s u 

tt t t 
h h 

The crystal ball 

Coming soon from Adventure 
International i3 Spiderrnan, 
written by Scot! Adams as a 
follow up to the successful 
Inctecbbie Hulk Like Hulk, ihe 
adventure will be text and 
graphics and be available for a 
witfa range of home 
computers 

Scott Adams also has two 
oinors on the way — Sorcerer 
of Claymore Castle and Return 
to Pirate Island. The latter is a 
sequel to the earlier, and 
immensely popular. Pirate 
Advent uar, 

Beynnd The Infinite <S the 
title of Digital Fantasias 
latest. Expect it in your shops 
soon. 

The Final Mission is the 
third part of Incentive 
Software's Ket trilogy for the 
48K Spectrum The earlier Iwo 
were Wounams of Ket and 
Temple of Vran While all 
three are salt-contained 
adventures, solving alt of them 
could win you a video recorder 
from Incentive in a 
competition to celebrate tne 
release oi the complete saga. 



A helping hand 

For BBC adventurers wrestling 

with Acomsoft'a superb 

PHILOSOPHER'S QUEST: 

Being grabbed by a sad 

octopus' 5 

KNI FO ELTTOB A Tt EVIG 

Have you ceased to exist? 

KNIHT TON YHW OS MA I 
EROFEREHT KNtHT I 

For stymied players of 
Adventure International's THE 
COUNT: 

Stake keeps getting stolen 
when you fall asleep in the 
brass bed? 

TESOLC YTSUD EHT Nl Tl 
KCOL 

Coflin locked from the inside? 
TES SAH NUS EHT RETFA Ti 
GNINEPO YRT 
HUGO NORTH 




Our man with the 
brass lamp and 
the key to a 
thousand 
mysteries sheds 
light on new 
adventure 
programs. Lost? 
Never fear, Hugo 
North is here. 

The Count 

BBCB 
£7.95 

Advent tire International 
ALTHOUGH THIS extremely popular 
adventure tut been around for hoi 
i icne, il hat only recently been 
converted for (he BBC H micro- 
computer. Now owners oi" this latere 
tin share in ihe pleasures and mind' 
Mrc^L-hinj* of one of tile CBBM 
the adventure genre. 

Written by Scott Adams, who ii 
something or a legend among 
jJvc nturc bull's . The Con nt sets you 
down in Dtecnfeft iJiJk, your 
mission being to seek out the Counl 
and destroy him, You -nan the 
adventure in a brass bed where you 
have just awoken, in the afternoon, 
from i deep sleep. There'* no point 
in trying ta escape from the cattle 
before you've completed the job — 
the hh.il peasants will lynch you it 
you KMnfM in sneak on i p 

The adventure accepts the ir^di 
liotiat veiWnoun cnmnunJ input and 
the location descriptions arc fairly 
short. But whs! sen ihe Scott Adam*' 
adventures high above other* are the 
tantalising puzzles and dry wit of dM 
author Among maity bizarre obiecis 
and i m i deim you'll come across in 
(iount arc a laughing bat, a 

bottle of hlmsd uhii.li is delivered to 

the cattle front door, and an 
unrtUabk flag pole, 

Vnii only have a certain time limn 
to accomplish ihe deed; watch out 
when ihe sun sets! You'll Bud I 
couple of useful him* on thru testing 
adventure over in the Helping Hand 
column 

Robyn Hode 

48K Spectrum 

£9.95 

Runesott 

Hon i if i Okfc Bn^bbe tpsfUag • 
the adventure is set in the llih 
century, ail the place names and 
spelling are based on original ballads 
ut Robyn and his Me* tie Mvij. In 







lact, in order to make this adventure 
as authentic as possible, a great deal 
of research hn been conducted, 
including reference to such historical 
document* as the Domesday Rook 
and early maps.. 
The adventure is massive, 




providing mtf 400 locations foe you 
to heigh-nonney-no around. Because 
il is to large, the adventure comet in 
two pans on ilu- single canrat, each 
pan using all ItiR o| ihe SpCCUttlO*! 
memory To get to play part iwn, 
you'll need to finish part one El i -- ■ 
this will give you a two-part code is 
your password to the second half 

The Vocabulary is similarly 
impressive — over 120 words in all 
— yet response is immediate 
entire program being in machine 
code, generated with the aid of The 
Quill 

The plotlc Maid Marion has been 
Captured by tilt She; vile and held in 



Sore**? 

(.ffiiCf* 

Nocyuighom Castle on a charge of 
iiL-juin Although it may well be a 
trap, Robyn decides to rescue hei 
without the aid ol his men. Can you, 
as the Outlaw of Scb«woode Forest, 
outwit the SbcryiTc and to save lair 
Marian} 

[f you fall, mortally wounded, 
l.ytik Johnnc carries you to Kirkkes 
Priory where, on your deathbed and 
bow in hand, you fire OtT • ptrf«i 
final arrow through rhe open window 
before expiring, Beat ih* for a poetic 
demise! (ktds Bodkins and I 
troth, this ts indeed a smash me 
adventure, highly original and 
beautifully put together, 

Mysterious 
Fairground 

48X Spectrum 

£6 95 

Buffet Micros 

A Qt in CUM] RATH) adventure, this; 

one has an inlnguint; selling. As you 

can gather from the title, the 

adventure takes place inside a strange 

fun fair where your objective is to 

recover five hidden items of treasure. 

You start inside the fairground. I 
locked gate dashing any though* of j 
quick exit. A cursory trip around the 
nearest locations reveals a garden — I 
wonder if chase bean plants can be 
watered' - a halt of mirrors, a rifle 
range and a gtvw train. 

The ghost train gives you your lb* 
ma »or problem, Inside this nde. you 
experience a sense of the unnatural 
so shouldn't be surprised to find 
something unpleasant lurking there. 



VOUB COMPUTER, NOVEMfJEtt 138* 55 



MEMOTECH MTX5QO 




MEMOTE CHMTXSOO MAJOR FBATURES 

STANDARD I/O PORTS 

% Variable rate cassette port (up to 2400 baud) 

# Two foys tick ports using Atari configuration 

# Centronics -type parallel printer port 

# ROM cartridge port 

# Uncommitted parallel input/output port 

# internal ROM board pott 

# Hi*? i output port 

% 4 -channel sound through TV speaker 

% PAL composite video colour Monitor port 

THE RS232 COMMON K A TIONS BOARD 
(required for disc expansions) 

# Two independent RS232 ports 

% 60- way Disc Drive Bus supporting up to four 5.25 and/or 8 inch 
floppy disc drives, plus instant access Memotech Silicon Discs, 
ond Hard Discs with capacities up to 3? Megabytes 

USES RAM 

# Optionally expandable to 5 1 2K in increments of 64, 12S r or 
256K 

24K OF ROM wl»ch includes: 

# MIX BASIC 

9 Noddy, o simple, text- handling language 

# A powerful Assembler. Disassembler- sections of machine 
code can be created and run by colling the Assembler from 
within BASIC 

# The sophisticated Front Panel, which displays the contents of all 
registers (including the F flag register) and pointers during 
program execution 

4 All four languages can be used interactively with each other, 
and with the user 



ROM EXPANSIONS 

M TX NewWofd, a 32K word processing package 
Hisoft PASCAL, wntfen specially hr the M TX Series 

THE KEYBOARD 

# Full size, 79-key, full-Stroke professional quality keyboard 
incorporating; 
Main Block with typewriter-style layout 

W A separate ' 2-key numericSediior keypad 

# Eight programmable func tion keys { 1 6 with shift) 

HIRES GRAPHICS MODE 

# 256 - t°2 pixel resolution plus 

# 32 X 24 Text in 1 6 foreground and background colours 

• AH 1 6 colours (i.e. 1 5 colours plus transparent) ore available on 
the screen together 

• 32 user-dehnabte easily controllable sprites 

4 J 28 separate GENPAT statements providing a huge range of 
user-defined characters 

TEXT MODE 

• Teat resolution is 40 X 24 characters plus 

• 1 28 user-defined characters 

9 Eight user-definable vulval screens or "windows ' (available in 
all modes) 

For further information, please contact: 

MEMOTECH 

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PHYSICS VlffTHS 






K 
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THE NEWS THAT Commodore iv to cease 
manufacturing the Vic-20 must have brought 
a nostalgic tear to the eye of many a home 
computer owner. It is rather like ihc rollout 
of the last DC- 3 aircra A, or the final German- 
built Volkswagen Beetle. It seems incredible 
that Commodore has already manufactured a 
million computers in ibcir recent I y-opened 
Corby facility — but the company will be 
rolling, machines off the production line at the 
rate Of one every 2.5 seconds when up to 
strength. Sadly, the Vic will not be pan of this 
great future — tomorrow belongs to the C-16, 

This has not deterred the company's sofiS 
ware arm tram releasing more new software 
for what must be one of the world's most 
ubiquitous computers. 

Bomber Mission, for the Vic-20 plus 16K 
expansion is a compact flight simulator, 
supposedly putting you in [he pilot scat of a 
World War Two fighter-bomber. First, select 
your targel — it could be anything from an 
armoured column to a submarine pen or a 
power station — then pick your weapon 
system: tall boys, fragmentation bombs, 
blockbusters. 

The computer then puts up the cockpit 
display. It's a fly-by-instrument job, even with 
the extra I6K the Vic is not up to giving you 
much of a view out of the window, until 
enemy fighters turn up. 

These judder about the screen in best 
Vic-20 rough-scrolling graphic fashion giving 
you an opportunity to use up your 
ammunition. 

Over the target the bombs arc automatically 
armed. You press the fire button and a 
message appears telling you the result 

You then have to turn to bearing to fly 
home, and be sure to lower wheels and daps 
above 1,000 feci and get speed in the area of 
120-150 knots. 1 was destroyed quite a few 
times by pre-emptive strikes on the runway'— 
the trickiest thing in this simulation is getting 
your plane off the ground before you're blown 
up. Each mission has a time limit and you 
must land before it ends. As a last gasp for the 
Vic-20, this program is quite an achievement 
— but it will bring a wry smile to the faces of 
Spectrum fighter jocks. 

At the other end of the scale from quality 
software produced on behalf of the manu- 
facturing company to ensure old hardware 
stocks keep moving we find the licensing 
trend. This is where a software house decides 
to let someone else have the bother of selling a 
line which has been around for a while. 

This is good news for Vic-20 owners in the 
case of Omega Software — "the last word in 
software" 1 — because they're doing a Master- 
tromes and selling everything for 1.99, Omega 
was ihe last word in Vic-20 software for 
Anirog, it would appe.tr, since all the Omega 



Paul Bond 
wallows in 
nostalgia as 
the last Vic 
is rolled out 
of the 
hangar 




VIC GAMES 



games looked at for this review hail orginaify 
from that house. 

Omega's Gunslinger is, in fact, Anirog's 
High Sfoon — a four-cactus scenario where 
you steer your cowboy around the screen, 
using a joystick and IfiK expansion. You are 
better off playing the game with another 
human since ihe micro takes a sadistic delight 
in shooting you dead immediately the game 
starts, just so it can play the funeral march. 
The theme music is Mungo Jerry's "In the 
Summertime", which should appeal to 
devotees of "60s novelty hits. 

Rank Ground is like Space Invaders tipped 



Gama 


Company 


Price 


Somber 


Commodore 


£4 09 


Mission 






Gunslinger 


Omega 


£1.99 


Battle 


Omega 


£1.99 


Ground 






Space Pirate 


Omega 


E1.99 


Bricks 


Palace 


£599 


Squish 


Palace 


£5.99 


Dodo Lair 


Software 






Projects 


£5,95 


Perils of 


Software 




Willy 


Projects 


£5.95 



on its side. Imperial walkers move toward the 
righi-hand side of the screen which you 
defend by moving behind your bases and 
shooting or zipping out and laying barriers in 
their path to delay them. 

Space Pirate, which needs I6K expansion, 
is set in a space shooting gallery presented in 
perspective. The targets emerge from a box in 
the upper centre of the screen and weave 
about frustrating your attempts to put the 
cross-hairs square-on and blast them to 
smithereens. The explosions are very good, I 
must say. The second level includes in- 
destructible ships which collect the target 



MM 


- 

i 
• 

- : 

• 
« 


Tll# 




.■mil 





ships, reducing your score. A neat little 
shoot-'envup, good value at this bargain price. 

Palace Software presents us wiih two 
"exciting and frustrating" arcade-style games 
for unexpanded Vic- 20s, excitingly and 
frustratingly titled Bricks and Squish. 

Squish is a shovc-things-around-and-squash- 
icky- things game. The graphics are pure 
VtC-20 primitive, which is all you can expect 
given unadorned onboard memory. Little 
purple scorpion-like creatures menace the 
protagonist who runs about waving his arm* 
and making the sort of footstep noises you 
bear between tracks on avant-garde rock 
albums. Twenty levels and watch out for the 
bug bullets. 

Bricks I found more frustrating than 
exciting. You are at the bottom of the screen. 
Bricks rain down. You dodge them. The idcj 
is lo climb up using the fire button unit! you 
reach the top of the screen. You can lump up 
only one brick at a time, but jump down any 
number of bricks-. 

Perils of Willy,, also from Software Projects, 
hut with IfjK more of elbow room is more 
impressive graphically. The cassette inlay 
tells us you are a little the worse for alcohol 
and you must stagger home, catching the 
notes of music that hang in the air. The 
loading screen puts up the tell-tale "Miner". 
It is in fact a ladders-and-levels game, with 
lots of jumping un in platforms, sliding along 
conveyor belts, and being eaten by dogs. The 
game is a dire warning to people who insist on 
seeking out the Pub of ihe Year in Richmond, 
rather than just going to their local, 

Punchy from Mr Micro runs on a Vic-20 
with KiK. You must guide Bobby the police- 
man through various obstacles to rescue Judy 
from where Punch has imprisoned her, 

This includes tumping over spiders on the 
flat, catching a magic carpet across the sea, 
and hopping along a castellated rampart. 
Have you ever castellated a rampart, missus? 
Enough or this alternative humour. 1 was a 
little spoilt by having seen this on ihc 
CPG-464, flicker-free graphics, smooth- 
scrolling etc., and frankly 1 had a hard time 
figuring out what some of the things were 
supposed to be on a Vic. Punch could have 
been the Honourable lohn Selwyn Hummer 
few all 1 knew. 

A brave try, but you know what they say 
about the limitations of ihe machine. Well, 
here I am, saying it again. 



YOUR COMPUTER NOVEMBER 19B4 67 



n 




Protek 

Switchablc 
Joystick 
Interface 



It is so easy to use- there's no software patch tapes or 

programming required. Simply plug in and flick the switch for 

compatabifity wtth alf games requiring a joystick 

'able for immediate deliver 
retailing at £19 95 



Protcfc Computing Ltd. 1A Young Squ*p*, 
Brocefltld JmjMHri^ Park, Livingston. lr¥*it Lothian. 0506 J15353 



IT'S EARLY DAYS yet, but it's clear that nut 
only do you get a monitor for your money 
when you buy an Amstrad CPC-464. You alto 
£ct a fapidly-ctfpanding soClwjrc base. 

"Software houses tend 10 take promise? of 
hardware availability with a pinch of salt," 
said Am soft boss William Pole when I asked 
him how the CPC-4o4 managed to attract all 
thit interest. "We've had Amstnid machines 
out at software houses since last December." 

A lot of the Amstrad software consists of old 
Spectrum favourites re-implemented Tor the 
464. That doesn't worry Am soft — "We just 
wanted plenty of software to be around when 
the machine came out." 

Re-implementation of Spectrum software 
makes sense — both machines share the Z-ftO 
CPU; software houses' fancies may also have 
been tickled by similarities in specification 
which the Amstrad shares with MSX. 
Another factor which Amstrad has in common 
with MSX is that both will appeal to that lost 
generation that wouldn't have been seen dead 
fooling around with rubber-mat keyboard 5, 
tape recorder level controls, dodgy cables and 
awkward power-packs. 

Yes, it's ime. The built-in cassette recorder 
loads first time, every time — at least it did 
while I was looking at software for this review. 
One of the best games to find its way onto the 
464 from its. Spectrum spawning ground is 
Derek Brewster's Code name MAT — 
acronym for Mission Alien Termination as 
many devoted vidkids will know. 

Tracing its heritage from the old grandaddy 
of computer games, Star Trek, via Atari Star 
Raiders, the game finds you in command or 
the USS Centurion r You can call up a long 
range scan, a solar chart and a sector scan 
showing 3 10 by 7 grid. This galactic A-2 
shows you where our boys arc and what planet 
or satellite the evil Myons are encroaching on. 

The game has two main options: you can 
play as pilot with deployment of Earth 
defence fleets under computer control: or you 
can play as commander — you control deploy- 
ment of fleets. Moving from one part of the 
sector grid to another is achieved by placing 
the cursor over the destination point, and 
pressing W to engage warp drive. Tricky, 
this. You have to keep the cursor central on 
the screen or else you will end up in some 
galactic cul-de-sac with everybody on the 
bridge arguing like it's the family outing to 
Bracklcsham Bay. 

My on fighters arc easy meal for the average 
space cadet, but cruisers are really nippy and 
the mot heirships are mean mothers. Al the 
higher level they attack you immediately 
iitiitl you zap their shields — then they retreat, 
recharge and return to the attack. And that is 
the secret of this game's appeal: the aliens are 
no pushover. 



L --- 



Paul Bond 
meets 

some old 
friends in 
new 
Surroundings 




A 



STRAD 



GAMES 



Strategy definitely comes into Masier 
Chess, implemented far Amsoft by Mikro- 
Gcn, While I doubt that this game could play 
those Russian boys oul or town like Bobby 
Fischer docs in the Prefab Sprout song, it is 
nevertheless an excellent tutor. 

The screen displays the chessboard and 
pieces together with the current level of play 
on the righi-hand side and a history of the 1 3 
most recent pairs of moves for reference on 



Gams 

eodenamu MAT 
Master Chnss 
MonslCi Mare 
Atom Smasher 
Alien Break In 
Galactic Prague 
Electro Freddie 
Gems of Stradus 



Company Price 

Micromecja ffi 95 

MskroGen £8.95 

RomiV £3.95 

Romik £8.95 

Romik £895 

IfKjeSCOmp £8.95 

So soft £8.95 

Kuma £7.95 



(All Bfcepl Iti-mg prvgrmmt mnHtbtt ffftpl AtnootU 



the left-hand side. This scrolls upward as you 
play. There arc 10 levels of ptav, numbered 
0-0. 

An opening book of 6,000 moves is includes 
in the program; apparently the program can 
look ahead as far as 27 moves on certain 
opening gambits. Looking ahead is a good 
thing to do in a maze filled with monsters — 
like in Rornik's 3D Monster Maze, The game 
which won such rapturous acclaim when 
introduced on the good old ZX-6T is 
beginning to look a little tired now on the 
Amstrad, as are most of the Romik retreads 
like Atom Smasher and Alien Break-In. 
Nevertheless, the latter is probably one or the 
best straight shoot-'em-ups around; I have 




even heard attic ionados speak or the BBC 
implementation in the same breath as Zalaga 
— praise indeed. 

Paco Suarez, one half of Indescomp's in- 
defatigable Pace and Paco who produced the 
graphically excellent Bugaboo for the 
Spectrum, has however created a stunning 
Space Invaders variant for the CPC-464, In 
Galactic Plague, everything happens so 
quickly that one is tempted to start doing Neil 
impressions — "What's happening, man?" 

Brightly coloured space fighters zoom 
across the screen dropping bombs in a 
diagonal criss-cross wave pattern. The game 
seems almost unplayable, but as various 
strategies are developed by the player it looks 
possible to survive long enough to score at 
least 300. Wow-ee. 

Your Computer has already reviewed 
Sosofl's Electro I-rcddic (Software Shortlist, 
October) and K.uma"s Gems of Stradus (Soft- 
ware Shortlist, September). Proiek's Hunter 
Killer submarine game written by Rod 
Hopkins in fact made its debut in Spectrum 
format in the August 1983 edition of Your 
Computer, Some 50 lilies are scheduled for 
release in the next three of four months, 20 of 
which will appear on ihe Amsoft label. Level 
9 are implementing most of their adventure 
titles for the 464 and Ultimate Play The 
Game were one of the first companies to get 
an Amstrad. The next wave itl releases will 
include some very brainy stuff, like a sound 
designer and also a screen designer. The latter 
is from DJL, famous for Ms Pac-Man, and is 
described as "the Rolls-Royce or screen 
designers." Tasword and languages like 
Abersofl Forth will also arrive in time, 
making the Amstrad a very respectable 
machine indeed. 

The clincher is the release of the Hitachi 
three-inch add-on disc drive. For less than 
£300 your get access to tSOK of memory on 
each side of a disc, This and the capacity to 
run CP/M 2.2 will appeal to the "serious 
user", whoever he is. For the games player — 
well, average cassette loading time is about 
tight minutes. Discs promise eight seconds. | 



YOUR COMPUTER, NOVEMBER 1984 53 



BBC SOFTWARE 




SOME PEOPLE ARtiVE that BBC games over the 
last year have not generally improved on the 
standard set by Acornsoft's Gist releases — 
Snapper and Planetoid*. It has also been 
suggested that the Supply of new software is 
about to dry up. Bui in fact, far from being on 
the wane, BBC software is definitely thriving. 
In particular the space epic, Elite, marks 
AcornsorVs return 10 form. This is a block- 
buster of a program which combines elements 
of Star Trek games, flight simulators, and 
trader games. I [ also has points in common 
with Atari's Stat Raiders — the game deemed 
by Jeff Minter and the editor of Practice! 
Computing to be the greatest ever written. 



The aim in Elite is to roam the galaxy as 
commander of a spaceship and by a mixture of 
trading and combat improve your status from 
"harmless," to "elite". In the trading stage you 
need first to choose a suitable planet. 

Long and short range charts show the 
options while entering Status mode gives such 
detailed information as the nature of a planet's 
inhabitants, its form of government, and 
technological level, 

Getting to a new planet, however, plunges 
the player into arcade action. On the way you 




reach your planet after a hyper-space jump, you 
must ftm locate and then dock with a rotating 
Coriolis space station — a difficult feat of 
maneuvering. 

In the action sequences the screen manages to 
combine a view of space in Mode A high 
resolution with a console display below in 
Mode 5 colour. Planets, space stations, and 
other ships are shown in motion in 3D 
complete with hidden line removal. 

This description barely conveys the scope 
and complexity of the game. Acomsoft is 
organising a monthly competition around n, 
Players who want to join the Order of Elite will 
have to study the 61 -page training manual 
thoroughly and then notch up hours of flight 
experience, 

Good though Elite is it has to yield first place 
to Island Logic's The Music System — not a 
game but easily the most impressive piece of 
software in this month's batch. Island Logic is 
a new software house formed by the record 
company Island Records, 

For almost a year a turn of 12 has been work- 

o the program. The end result is a package 

which makes other music programs on this, or 

indeed any other home micro, look crude by 

comparison. 

The Music System consists of five programs, 
oi modules, managed by a control program. 
Perhaps the most striking of these is the Editor 
module. Displaying some superb graphics it 
allows you to write notes on staves using the 
full range of musical notation. 

1 stand Logic rightly describes it as ihc 
musician's equivalent of a word processor. Up 
to 860 notes can be entered in any one of four 
yokes. Each note can be assigned volume and 
one of 15 envelopes, You can also set ihe 
tempo, transpose The key, and mark the ban 
automatically. Changing a note is simply a 
matter of pressing a cursor key to shove it up or 
down the stave 

When you have composed your piece you 



«0 YOUR COMPUTER NOVEMBER 19B4 



_L 



can play it back and watch the note scroll 
across the screen. Alternatively you could use 
the Linker module to combine it with another 
composition or load in a backing track. 

There is a Library due which contains a 
large number or predefined envelopes, rhythm 
tracks, and sample compositions. For a vivid 
demons! rat inn of the Editors power load in 
Bumble Boogie, a jazzed up version of the 
Flight of the Bumble Bee. Up the tempo and 
you can enjoy the spectacle of notes bouncing 
up and down the stave at a rate of 200 beats per 
minute. 

To create new sounds there is a Synthesiser 
module which displays graphs of the volume 
and tone envelopes. In the Keyboard module 
you have a superior version of Quicksilva's 
Muproc: it lets you lay down four tracks using 
the Qwerty keys which it displays as a piano 
keyboard. 

Hinh these features are common enough, 
although not usually so well implemented. 
Quite a new feature is the Pt inter module. With 
this you cm create a four-part musical 
manuscript by dumping it to the primer in 
either high or low resolution. 

Apart from its range of facilities what lifts 
TMS oui of the ordinary is the ease with which 
it can be used. The entire system is driven by 
menus together with Macintosh-like icon*. And 
it even includes message windows which paste 
over the display. 

Perhaps the best ttibute one can pay to TMS 
is that it is probably the first program that 
would not draw scorn ftom practising 
musicians — providing, of course, that they 
were not put oil by the rather tinny quality of 
rhe BBC's sound. 

Back on the games front, there is Acorn&olVs 
T etrapods, a much simpler game than Elite but 
in its own way just as addictive. You control an 
Asteroids-style triangular ship. Scattered 
around are numerous pods, which resemble 
peppermint lozenges, and a couple of Killer 
Bees. In Later screens the bee* arc assisted by 
the mote vicious Red Devils and Poison Orbs. 

It is possible to shoot some of these creatures 
but more satisfying is to enlist the aid of lizards. 
These are what hatch out when you hit a pod, 
Like hcat-sccking missiles ihey are relentless in 
pursuit of the nearest lile-form. 

To complicate matters the scene is one of 
oomtam motion with bullets bouncing otTthc 
sides, pods behaving like billiard balls, and 
wriggling lizards tracking their prey. It is like 
looking at a cell colony under a microscope. 

By contrast Acornsoft'sothcr two releases are 
disappointing. Drogna » a two player board 
game which first appeared on the TV scties 
AJuntuw Game, Although a fun game which 
cadfa for a high level of skill, tt is only margin- 
ally enhanced by being translated to ihe 
computer screen. What is needed is a one 
player option against the computer, 

Volcano requires you n pilot a helscoplcr 
across Mount Crona, avoiding an eruption of 
blue rocks. On the other side ate some humans 
who need to be carried bade to safety. The 
graphics here ate lacklustre and, while the 
game is challenging, il lacks variety. Acomsofi 
would have done better m have attempted a 
version of the definitive helicopter game, Chop- 
l.tter 

If there is already a great game on another 
machine, converting it to the BBC often 




succeeds better than striving for originality. 
Atarisoft has made a good job of translating its 
classk game, Pole Position. 

Most of the original features are here, You 
arc competing in (he Atari Grand Prix against a 
dozen or so othet racing cars. Crash into them 
and you burst imo flames. Take to (he verge if 
you like hut it slows you down and you risk 
hitting a hoarding. 

These and other effects such as gear changes 
■ad ihe mountain backdrop, which scrolls 
when you corner, arc convincingly rendered. 
The all -important engine sounds arc not quite 
as satisfying as they are on the original. The 
BBC can't reproduce the deep throaty roar of 
the Atari cars, And the scrolling is not as 
smooth. Nonetheless this is the best race-track 
game available for the BBC, 

Converting a platform game to the BBC is 
not quite so easy, An essential feature of the 
genre is that there should be numerous 
Jitter cot screens. Bui on the BBC there is not 
enough memory to siorc a great variety of 
screen layouts. 

Durell's Manic Miner-type game, Mineshaft, 
gets round the problem by stripping away such 
extraneous details as zany living objects, and 
concentrating on sheer (ortuousness. The cast 
of hostile objects is small and many of the 
screens use the same conveyot belts or 
crumbling floors, Bui to moke a successful 
jump your timing has to be of split-second 



The Music 






Syaiom 


Island Logic i 


El He 


AcornsoM 


£14,95 

£17 95 (disc) 


Orc-gna 


Acornsofl 


£9 95 

£li 95 (disc) 


Teirapods 


AcoritSOfl 


E9.95 

El 1,95 (disc) 


Volcano 


Acornsofl 


£9 95 

C1 1.95 (disc) 


MmftShalt 


Duirell 


E5.95 


System iSOOO 


AVS 


£12.95 


Pole Position 


Atartsofl 


£9.99 



accuracy, while finding the correct route is 
even more critical than usual. 

To prove the point, one of the 20 screens — 
entitled The Resting Place — does without any 
moving obstacles. You have simply got to 
travel from A to B — a bit like trying to Bud l 
foothold on the North Face orthe Higcr. It is a 
relief to discover you can move on to the next 
level by pressing Escape. 

Needles* to say this level of difficulty is lust 
what ihe platform enthusiast looks for. 
tbet with a restful soundtrack — a 
rendition of Gr&ntl&vts — and smooth 
animation it makes Mincshift superior to such 
rival games as Rlagger and Ghouls. 

Would-be hackers con serve their apprentice- 
ship on System 15000. A hacker, of course, in 
someone like the teenage hero of the film, UV 
Games, who uses a modem and the telephone 
system to break into computer databases. 

System 15000 is the name of the simulated 
communications system which this game puts 
at your disposal. Apparently your friend 
Richard's company Comdata has been ripped 
off to the tunc of $1,500,000. He wants you to 
save the company by breaking into a chain of 
computer databases. 

Throughout, the game provides a convincing 
simulation of the hacker's task On screen it 
gives a typical viewdata display It maintains 
the realism by producing a telephone sound. 

At the sta,rt you are supplied with the tele- 
phone number and code of a single database. 
By viewing this you gain leads which allow you 
ii i.cm to others. Each may contain inlorination 
about names and associated codes or vital 
financial and coroptQJ data. 

In all there arc 16 databases to crack and as 
many red herrings along the way. Expert 
hackers might possibly solve the problem in 
mil' day-long sitting but it is more likely to take 
weeks or months, tn this respect the program is 
like an adventure game. But otherwise System 
1 5000 is that rare phenomenon — a genuinely 
novel game 



YOUR COMPUTER NOVEMBER 1984 fll 



MSX REVIEW 



MSX misi HAVE seemed like a good idea at 
the time. Good Tor the user, who could be sure 
of buying a stable machine, with what was 
likely to prove a huge range of games and 
other soli ware. Good for the manufacturer, 
who could avoid going out on any draughty 
and lonely limbs, and save on costs by sticking 
to components that were in plentiful and 
cheap supply. \ 

Bur i here is one tiny problem. For the 
whole idea of MSX to work, you have lo 
impose fairly strict rules of what an MSX 
computer must and must not have. This 
means that all MSX machines are much of a 
muchness. They all run the same Basic from 
Microsoft, have a 7.-80A processor, and use 
similar sound and graphics chips. So when it 
comes to buying a particular model, you have 
to choose between very similar machines. 

The four micros reviewed here — three 
"official" Japanese MSXers, and one 
interloper from Korea — show the different 
ways manufacturers have tried to make their 
machine stand out from the crowd. The most 



video outputs, where you put them on your 
plastic box is up to you. And you certainly 
have plenty of room. MSX machines seem so 
far to have pretty greedy footprints. 

One of the tell-tale signs of an MSXcr is its 
cluster of cursor keys, set to the right of in* 
keyboard. Sony's Hit Bit Uses four 
trapeziums — or is that trapezia? — arranged 
in a square. These are nice and large but very 
shallow, so you feel curiously unsatisfied 
when you hit them. 

The Mitsubishi ML-F80 uses a similar 
plan, but squashes the left and right cursor. 
They do, however, have deeper travels, l-'nr 
my money, the Canon V-20 wins the day in 
this department. Rather daringly, k uses bold 
Urge rectangles, two large ones for up and 
down, and (wo smaller for left and right. 
Again, they arc rather shallow, but their shape 
somehow compensates for this. 

In fact Canon has played it big and bold 
throughout its machine. The five t unci ion 
keys doubling up to 10 with the Shift key that 
the MSX scheme of things demands, extend 



example in MSX Basic, 1-4 is programmed as 
List and F5 Run. With such big targets it is 
easy to flick a nonchalani finger in their 
general direction and obtain the desired 
result. 

The other machines all ruck the function 
keys away to the left-hand side of the 
keyboard, and use skmny Utile strips for keys. 
In-depth discussions of the width of function 
keys may seem completely over the top, but 
differences between MSX machines do really 
come down to this level. Most people pay far 
too little attention to the keyboard. After all, 
this is where you actually get that hands-on 
experience. Normally you don't have any 
choice, If you want the Spectrum you just 
have to put up with those funny rubber keys. 
But with the MSX range, the feel and layout 
of the keyboard could well be the deciding 
factor between machines. 

MSX keyboards have much more than just 
the standard QWERTY keys. Most keys can 
generate three or four different characters 
when used with the Shift key, Graph key, 
Graph and Shift key, Code key and Code and 
Shift key. There is a special foreign accents 
key just for sticking on umlauts and 
circumflexes. 

Other unusual keys on all machines include 



- 




Blacks and greys are the 

colours for this autumn. But 

he catwalk, Glyn Moody, tell 

ie Canon, Mitsubishi or 

> and the £230 

Tser cut? 




62 YQUfl COMPUTER, NOVEMBER 1984 




such things as square and curly brackets, 
pound signs and Spanish tilde (signs. One 
effect of [his generosity is thai Return and 
Back Space keys ate slightly too far away if 
you arc trying to touch-type with your hands 
stationary on the keyboard. 

The Canon scores again in choosing to put 
the accents key mentioned above 10 the right 
of the right-hand Shift key. ll is therefore 
much harder 10 press Return be mistake 
only too easy on the other machines. 

All of the MSX machines have TV, video 
and audio outputs, cassette port, MSX printer 
port, two joystick pons and a second cartridge 
slot which can function as an expansion bus. 
Ports and on/off switches arc att over the place 
on different machines, but there are no 
startling innovations 

The can ridge sockets are generally in the 
top right-hand comer of the machine — 
except for that individualist Canon,, who puts 
it in the top left-hand corner. This may well 
be more convenient for right-handed games 
players who wish to Hip in mid-stream from 
one sapping cartridge to another without ever 
loosening their fevered grip on the joystick. 

Moving on to the software, one way of 
adding something to a machine's appeal is to 
suck in a few ROMs' worth of software. This 
will leave the basic structure of the machine 
intact, and preserve the MSX format, Sony 
has followed this path with its Personal Data 
Bank. 

On powering up the Hit Bit, you ire given a 
short menu of choices. One of these takes you 
straight to Basic The others lei you m 
address book and memo pad program which 
arc held in ROM, These ate not very 
sophisticated,, but you can store about SO 

(continued on page 65} 



YOUR COMPUTER. NOVEMBER 1 9B4 S3 




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INTERFACE" C\Q QS 

A new Joysbck Interlace mat s 
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tapes required Just flick the swiich 
to satectttta system you tttjuiiG 



ELECTRON 
PROGRAMMABLE 
J OYST ICK 
INTERFACE 
(Available November) 

Mow you can use any ATAHI-7YFE" 
Joystick including Joystick n to 
control your arcade software You can 
select up to nine keyboard functions 
and proaramme these Into your inter- 
lace Mo software (apes or patch 
pioasommft roguued 





ORIC ATMOS 48K PROGRAMMABLE 



£29.95 



Now you can use any ATWU'TYPE' 
Joystick including Out eteftatn 
Joystick to control your arcade son- 
ware You can select up to nine 

keyboaid funrtiuiu; cmd pfOgranirpe 

these Into your Interface. No 

software topes or patch 

programmes required 



BBC MODEL B' 

JOYS TICK 

INTERFACE 

£11.95 

Just plug this Interface into 
youj ANALOGUE IN pari 

and you can now use any 
standard HAHIT¥PE Joy- 
stick including Ouickshoi 
D Joystick 





Protek Computing Ltd. 1A Young Square, 
Briicefield tndimrial Park, Livingston, West Lothian. 0506 115353. Telex No 7275S9 






64 YOUR COMPUTER, NOVEMBER 1984 



(continued from paga 63) 

names with up to 80 characters' worth of 
information in the address and telephone 
book. You can then search through them 
cither by name or number or address. Lists of 
addresses can be saved to tape or cartridge. 

tr these first programs are a little utiim- 
prcssive, they at least hint at possible 
directions in which MSX micros may 
develop. In an effort to woo buyer* to 
particular machines, manufacturers will 
probably be forced to offer more and more 
glamorous ROM extras, # 

The MSX Basic itself, of course, is 
sacrosanct. So there can be no tampering here 
to tweak its performance or facilities. Bui to 
be fair, thai is net realty necessary anyway. 
Microsoft has done a good job in providing a 
powerful and clean Basic, Some of the 
commands were discussed in detail in the 
Toshiba review in the September issue of 
Your Cemputrr. Everything you would expect 
from a reasonably structured Basic is there, 
along with powerful sound, graphics and 
sprue commands. Out of a nominal MK 
RAM, you are left with only 28,8 15 bytes 
program area. Editing is carried out simply 
and efficiently using the cursor, invert and 
delete keys. 

Text and graphics modes arc entered using 
the Screen command. The default value is 
Screen 0, which allows 40 columns and 20 
rows. Three rows at The bottom are given over 
to the function key labels. These auto- 
matically switch when you press the Shift key 
to flip from F1-F5 to F6-F10, Screen 1 gives 
you 32 columns. Screen 2, the high-resolution 
graphics mode allows 256 by [92 pixels. 
Screen I is the low resolution mode, with 64 
by 48 coarse pixel elements. The image ii 
stable and the colours reasonable. 

16 colours are available, but in the high-res 
mode there arc restrictions as to how 
foreground colours may be assigned to 
individual bits. Another problem is that text 
may not be mixed directly with graphics. 
Graphics commands include plotting, line, 
circle and box drawing, area filling, and sprite 
commands. Up to 32 sprites can be handled at 
once. 

Two types of sound commands axe 
included, both of which use the TV speaker, 
The Sound command itself allow* you to 
specify 13 parameters defining channels, 
loudness, pitch and envelope. A more civilised 
command is Play, which lets you input letters 
such as A, C, E, which are interpreted as the 
appropriate musical notes of that name. 
Altogether there are three musical channels, 




and also a simple Beep command. 

Other features of the Basic include a Def Fn 
which allows you to define additional 
functions, and useful programming aids like 
Tron which turns the program trace on, and 
error-trapping routines like and Evrl and Err, 
giving the error code and the line which 
generated it respectively. There is also a real- 
time clock accessed via the variable Time. 

Running a scries of standard Basic 
benchmarks is instructive. In ordinary loops 
and tiotoSj the MSX machines emerged as 
about half as fast as the BBC, and twice as fast 
as the Spectrum. But in one speed checks 
designed to test the maths routines — such as 
calculating sines, logs and so on — the MSX 
micros were markedly slower. This is mostly 
due to the fact that they work to H -digit 
precision. This is hot stulT for a home micro, 
but the penalty you pay is loss of speed in 
intensive number-crunching activities, For 
games this should be no problem. 

After manufacturers have done their utmost 
in hardware and software to make their MSX 
micro into an MSXtra micro, they have only 
one weapon left: the price. And this is where 
it gets interesting for you. 

Since, in functional term*, there is very 
little to choose between the various machines, 
it would be perfectly reasonable to buy purely 
on the basis of price. Therefore, you would 
expect manufacturers to be locked in a life-OP 
death price war. Which rather goes against the 
spirit of gentlemanly co-operation that lies at 
the heart of MSX. 

Alternatively, the manufacturers could 
come to an equally gentlemanly agreement to 
keep there prices roughly comparable, so that 
there were no gross differentials, and also to 
keep them profitably high. At the moment, 
this appears to be what is happening, Both the 



CONCLUSIONS 

■MSX is here, and here to stay. The 
concept will prove more relevant to 
i ho first -time buyer than to the 
hardened games addict or machine 
code programmer, 

■ The machines are sensibly 
des'pned. and have an especially 
good Baste The standard of 
construction seams high, 

■When it comes to buying an MSX 
machine, there are two things to 
remember. First, that prices are 



almost bound to come down 
dramatically from their present high 
levels. So wail if you can. 
Secondly, it you really must be the 
first on your street with one of 
these dark gleaming machines, 
make sure you try out as many as 
possible, especially the keyboards. 
■As time goes on, it is also likely that 
manufacturers will offer an 
increasing number of "added- 
value" features. Again, check 
these out thoroughly before 
deciding. 



Sony Hit Bit and Mitsubishi ML-F80 weigh 
in at a hefty £299-.95 . The Canon breaks ranks 
slightly with a price tag of £2i9.9$. These arc 
all 64K machines. Although MSX allows for 
smaller RAM sizes down to I6K, manu- 
facturers veem sensibly to be pushing the top 
or the range versions in this country. 

This kind or tacit agreement works fine 
while everyone sticks to it. The danger is that 
some outsider will come in and use the very 
strenght of MSX against itself. That is, it will 
produce a totally MSX compatible machine, 
but for half The price, say. Since there will be 
functionally little difference between the top 
and bottom of the market, the intruder stands 
to clean up. 

There are signs of this already in the 
Korean MSX machine reviewed here, the 
Goldstar FC-200. In all important KSfMCU 
this it identical to the honest -to-God Japanese 
models — except that it is £70 cheaper. True, 
rhe whole machine docs look a bit like a 
Mickey Mouse toy version, with garish red, 
green and blue keys. But on powering up, the 
differences prove only skin deep. 

Unfonunatcly for the Japanese manu- 
facturers, their bright peripherals will be no 
help either, Sony has produced a stylish but 
rather unwieldy plotter costing £250, a J20K 
disc drive for a steep £150, and various 
joysticks, including an infrared one for £65, 
Apart from being hideously expensive, the 
disc drive is also rather badly designed. For 
reasons of cooling, presumably, the entire case 
is perforated with large holes — just asking for 
coiTec or other sticky liquids to be poured in. 
The other manufacturers will no doubt follow 
suit in announcing add-ons when the 
machines arc released over the next few 
months. 

Peripheral MSX appeal 

But again the complete compatibility of 
MSX means that you can use any manu- 
facturer's equipment with another's. So once 
you have bought your cheap but workable 
MSX micro, you can then pick and choose 
similarly amongst the peripherals. For once, it 
looks as if things could be going the user's 
way. 

Whether the whole MSX philosophy is 
going to result in an MSX plosion u another 
matter. Personally, I think that the U K 
market will prove hard to breach, largely 
because of local aberrations like Sinclair, and 
the strong tkimmodorc following here. The 
new Commodore Plus 4 in particular seems to 
offer practically everything that an MSX 
micro docs, but with a neater design and 
useful bundled software. The Amstrad., too, 
will be a strong rival. 

But ihere can be link doubt that the 
machines will sell, and that huge numbers of 
games will be written for them. It could be 
though, that a plateau will eventually be 
re.idial where every 3js1 drop has be«U 
squeezed out of the Z-80 that lies at the heart 
of the MSX philosophy. It is not clear where 
MSX will go after this ffcst wave of machines. 

Cc Mainly! we can expect — one day — much 
more exciting games on something like the 
Ql.. As ever, it really is a question of paying 
your money and taking your choice. 



YOUH COMPUTER, NOVEMBER 19B4 65 









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BARGAIN BUYS - UP TO £50 

These machines have been around for some time now, are competitive prices. They are worth considering as basic entry 
about to disappear from the market and arc available at very machines to see what computing is all about. 


COMPUTER 


Hardware 


Operating System, Basic 


Software 


Accessories 


ix a 1 

; Srtckwf 
f 30 


Black and white only 
Touch sensitive 
nwmbrano keyboard is 
batetv adequate but this 
it the cheapest 
computer. IK RAM. An 
ageing design 


Good editor with syntax cheeked 
keyboard data entry Bainc it very 
slow. Chunky graphic s and no 


Lots and lot* of very good 

cheap sotlware considering 
the machines limitations. 


Keyboard*, joysticks, 
primers, tor* of 
choice, relabvftly 
cheap. Good book*. 
Add on memory. 


MC-10 

Tandy 

C&O 


Colour with chunky v 
graphics - no user 
delmed graphics. Sound 
through TV speaker. % 
Ski* keyboard — fndvmg 
h*rd plastic key* wi|h 
space bar. 


Kay word or typed ih full entry 
Microsoft Basic. 


The* e are games, not many 
and adequate Is about the 

right description. 


TP10 printer, also 
very cheap, Add on 
memory TflK. 


BOM) MB 

Computer 
Garnet Lid 

ceo 


Colour and Sprue ■ Th« 
MSX chip set coupled to 
the worst keyboard ol 
iha three cokMji 
computet*. 4K 3 channel 

nund- 


The b*st operating system software 
for a m.'c ZBO programmer, access 
lo everylhing. fey about original 
pr«ee and keyboard. Basic ■* a tw 
week 


Van/ l'tf« software available, 
but what there Is. it good 
quakty. 


Available but pnly 
from manufacturer, 
no other sources, 


AOUARLUS 1 

Rodofin 

€60 


Chunky graphic* - no 
uhi defined graphic*. No 
sound, keyboard only • 
hi lie better lhan the 
Sort), 


MKfosoll Basic but no editor, 
keyword or typed entry. 


Mora lhan Sord or MCI but 
again, only adequate. 


Printer, memory, 
joysticks end discs 
available relatively 
cheaply 


COLOUR COMPUTERS - up to £ 100 

The machines in this range offer more than the bare minimum The Vic-20's software base is extensive and cheap. The Atari's 
performance and each has its own particular strong points, software is the best, but expensive. 


j COMPUTER 


Hardware 


Operating System/Basic 


Software 


Accessories 


1 ATARI 600XL 

tat 


Vcv flood real keyboard. 
Newish design. Sprite i 
and good sound - 4 
channel 16* needs 
special tap* recorder- 


Very much batter Baste lhan original 
Alerts, Nee screen editor with 
syntax checked date eniry. 


Soma of the vary best , but 
cartridge* are enpansrve and 
soon cost a great deal mow 
than the computer 


Printers. toy sticks, 
dikes, memory. 
Average price* — 

look for special 
alien. 


VIC 10 

eat 


Good real keyboard , 
Limited characters par 
Una 3 channel sound. 3K 

mam needs special tape 
recorder 


Limned Basic with a good fcne 
editor 


Very taiga number of quality 
cheap cassette games 
available Soma require 

addftronal memory 


Printer, lOytttcks 
disc, memory, 
average prices 


TANDY C0C0 
E99 


Moving key keyboard 
Lowish colour resolution 
1 6K mamaiv. Sound 
Ihrough TV speske> 
RS232pwt 


Una editor, abbreviated errpr 
massages show computers age, 


Can run OS'S on expanded 

system 10 provide user with 
mini computer (eel New 
learning book may be the 
shape of things to come 


Alt things available 
but do tend to be 
expensive. Can be 
extended to become 
a limned husmets 
machine. 


LARGER MEMORY COMPUTERS - up to £150 

The larger memory generally permits more extensive and better quality cassette-based games. 


COMPUTER 


Hardware 


Operating System/Basic 


Software 


Accessories 


DRAGON 32 
09.H 


Baal kovboard bur faata • 

Mile Ipcky Sound 
through TV, 32K. 


Vary amnitsy to Tandy CoCo on 
which it was based, 


Soma good cheap software, 


Printer*. di*c*. 

joysticks etc 
reasonably priced, 


ATMOS oric 
£99 95 


Good real keyboard. 3 
channel sound 


A vast improvement over me 
origins! One 1 which had cast one 
loading difficulties 


The, lower UK profile at the 

0'ic Atmoi will not help in 

the availability ot software. 


Printer*, discs 
reasonably priced, 


SPECTRUM 

fHnclajj 

if. Pocki 
El 29 95 


Moving My rubber 
keyboard worst of this 
group, weak sound Thi 
Spec Ir urn it becoming 
Overpriced in the Current 
market. 


Single keyword entry with lull 
syntax check on line entry. Design 
becoming dated now 


By far I he large si cheap 
quality software base of any 
UK machine. The Standard 
by which other games are 
fudged 


Printers, jovtlick* 
RS232 interface 
Microdrive* etc. 
Generally cheap 
though some items 
could be cheaper. 


AQUARIUS 2 

36K 

H29 


Good real keyboard. 
Lrmneci Chunky colour 
graphics. Sound through 

TV speaker 


Microsoft emended Baste with 
rnssonatole editor Some ot the feel 
of M$X in this Bene. 


limited softwer* availability 
kfcely tq be a problem. 


Aquarius 1 
accessories fit and 
just aboul everything 
available from printer, 
fey sticks memory lo 
cheap discs. 


THE BEGINNINGS OF BUSINESS USAGE - ABOUT £200 

The Mcmotcch has the ability to become a limited business ability. The Electron needs a fair amount of expansion which 

machine but there is unlikely to be a tremendous amount of effectively changes the price bracket it occupies. 

software for it. The Commodore has the software but nor the (continued on next page) 



YOUR COMPUTER. NOv6M8£ft 13$4 A? 



I 



teantsnaad from previous jpoget 




COMPUTER 


Hardware 


Operating System /Basic 


Software 


Accessories 




COMMDOORf 64 

£196 


Average keyboard Very 
good sound Iscilitie*,, 
need* * special CMMIt 
recorder 


Minimal Basic, does have spnt.es 
but not oaif to use, or 
Sound, from Bas.c 


Do like cartridge football 
Games tend to be more 
expensive than. say. 
Spectrum 


Everything - big 

selection 




ELECTRON 

ACORN 

£199 


A cut down version of 
(ha BBC computer Good 
keyboard. Single channel 
sound. Overpriced. 


Runs slower (hen the BBC but 
qua'Hy Baste, Can run mixed Baatc 

end machine code programs.. 


Ouantuy increasing all Ihe 
lime 


Need* expansion box 
bet ore accessories 
can be hung on i o 
computer , 




MEMOTfCH 
1 CZ39 


Vary solid machine with 
average keyboard 
include* separate 
numeric keypad. 


Budl n assembler /disassembler plus 
Noddy language besides Basic. Line 
Syntax checker Can nxpend to a 
CP'M system 


Limited In quantity bul of 
reasonable quality. 


Everything, but iittle 

choice. 




AMSTRAD 
£240 


t>Xra>Jps Mack end white* 

monitor end built-in 
cassette drive Quality 
keyboard nrtrJ 1 united 
cassette control 


Nice ooeiat<ng system. Bauc ta 
quick but could be more user 
Friendly In graphics and sound 
department 


Needs Ihe colour monitor lo 
really be used as a games 
machine Tv adaptor 
available. Some nice games. 


flew machine, items 
just beginning to 
appear. 




TOP OF THE RANGE - about £400 

These machines cover ihe top end of the games machine range and the bottom end of the business machines. 




COMPUTER 


Hardware Operating System /Basic 


Software 


Accessories 




ISC 

ACORN 

£399 


Vary old design. Nor long 
before ihe new AflC"» 
take avflf Well 
ovorpiicad because of 

captive mftrket 


Very fait. agamst which ail others 
are compared. Can run mixed Beak 
and machine code programs. 


Mot as good as specidcation 

is capable of producing, The 
besl lor educational uses. 


Big choice m all once 
ranges. Can become 

expensive with a big 
footprint on the desk 




QL SINCLAIR 
£339 


Uh» Ihe IBM eiir/rnaltve 
microprocessor 
iMCflaOQSl The 
hardware is the beat in 
the once range, still a 
lew bug* to be knocked 

out 


Look Out Ibr 3rd Party vendor* 10 Very few 8! present, bul all 
provide multiuser.'muHi-tasVino. o.s the best software is. being 
rhai works 4 soft wire packages si programmed lor it at 
price lhat era improving in quality - present. Worries about 
slowly cartridges, pricing and 

piracy. 


Needs care when 
Choosing monitor and 
printer, they don't all 
work with the 01 




AM8THAD 

£349 


Includes coieur monitor 
end cansettc drive. Not 
always oasy la mad BO 
column text but display 
rock steady Stereo 
found. 


Quick Basic wilh nice editor easily 
lesmt. 


The BW monitor is more 
suitable for business use. 
Some very good software. 


Few at present hut 
coming soon. 




FINSTEW 

£499 


Include* e 600K 3" due 
drive Nice keyboard and 
reasonable sound 


Clean machine wnh Basic loaded Predominantly a business 
from disc CP.M capability mach>nc between tho QL and 

Ihe ABC"* and Ihe new 

Apricot. 


Not much at present 
but it should be al 
•vaaloble in time. 




A0VANC1 BO* 
£400 


UparadBbta to IBM PC 
compatible. Looks 
different from other 
computers with keyboard 
storage m main console. 
Good keyboard Takes up 
• lot of dealt. 


Very nice lull screen editor, the IBM 
standard Basic Faster than IBM 

mact.inc 


Surprisingly Mile lot lit* 
basic machine, but masses 
for the lull blown expanded 
version Software is 
comparatively expensive. 


Most IBM accessories 
are suitable, the cost 
is hignei than other 
accessories listed. 




ALPHATRONIC 
£347 


Very good keyboard with 
excellent (eel. Very 
kmrted graphics. 


Full screen editor, with Microsoft 

•Hie. 


Very tittle, requires 
expansion to CP. p M Java! 
before much software 
available. 


Discs, printers etc (0 
lull CPi'M 
Cofnpadbil.lv 




COMING SOON 

Some new computers will be launched prior to Christmas and in the market, The Following group is my assessment of the 
they will have varying degrees of success in achieving a place machines based on a brief encounter. 




COMPUTER 


Hardware 


Operating System/Basic 


Software 


Accessories 




COMMODORE 16 
£140 


The replacement for the 
Vie 20 Nice keyboard, 
good sound. 


Batter Basic bur a vary conservative 

specification. 


Can't help but be good, 
inumHv certain to be 

cartridge and ajtnenilve. 
There may nol be e UK 
driven cassette base this 
urn*. 


All Commodore 
accessories should 
fu 




ENTERPRISE 
£260 


One year on from imiiel 
showing, the impact >* 
considerable tea*, 
Whether a batter boy 
then Amstred i* doubt fiii 
Keyboard* on the 
machine I've aoen poor. 


Good Basic but the competition Is 
no longer overawed by the 

specification, 


Bound to be good, bul 
whether there will be 
luIlicHsni to sustain th* 
machine is queslioneble. 


Coming soon. 




COMMODORE +4 
£250 


Vary wee left! 10 ft* 
machine with a good 
keyboard. Sound tecilitie* 
nat up to those of ihe 
C9M64- 


4 vary simply buiM m package*, bul 
they ate quick and usable. Better 
Basic than 64. Package* are word 
processor, spreadsheet,, database 
and business graphics - no sprites. 


Certain to Mow 64 
standard, only question is 
tho availability of cheap 
cassette -based soil ware, 


Some differences In 
th« connectors mm 
mean tome new 
accessories Joystick 
ports era different 
etc. 




MS* 
£260 


Cen be bought in any 
shape, colour to tun 
taste. Real keyboard*, 
moving key. From 16K 
upward* memory. 


Bound to become THE horn* micro 
standard with the ability to run 
CP/M SOU Wife when expanded 


Already substantial and 
before long •" now games 

will be hero f«r-.r 


Everything including) 
Ihe new quick disc*. 





68 YCrtJH COMPUTER, NOVEMBER 19&4 



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VOUfl COMPUTER, NOVEMKR 1904 69 



First, a question. 

Who do you think are the 
world's most avid consumers of 
microcomputers? 

The ingenious Japanese? 
The fashionable French? 
The acquisitive Americans? 

Believe it or not, it's we 
British who own more micros 
per person than any other nation 
on earth. 

Yet, despite its amazing 
impact, the microcomputer has 
only just begun to scratch at the 
surface of our lives. Without 
doubt, the best is yet to come. 

Use and Abuse. 

In several recent surveys, 
some astonishing facts about 
micro use and abuse were 
revealed. 

It was discovered that the 
micro is hopelessly under- 
utilised. If you're already a micro 
owner, your own experience may 
well confirm this unhappy state 
of affairs. 

Brainpower. A source 
of knowledge. 

For thousands of years, 
the key to self improvement has 
been in the hands of the written 
word. Now, thanks to 
the Brainpower range, it's very 
much in the hands of the micro 

As the Brainpower 
range demonstrates, this does not 
require prior knowledge of micros, or 
how they work. 

The Brainpower concept has 
been devised as integrated applications 
and educational software. And its aim 





£.11 ll EiE.lttiJXVW*'.- i/.lf* fjjnvKtes S u 

ptogiom, a teaching ptogi&m and i 
tuioiuil - inusguitecl appbaitMfu < 



« pail pAck»g*> mi application* 
irei manual and r 



Now you and 
bring out the b 

is to stretch both your mind and your 
imagination. 

It offers a unique way to realise 
your own full potential and that of your 
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72 VOUR COMPUTER NOVEMBER 19B4 







THE £100,000,000 ROBBER/ 



PIRACY 

Video companies have already 
felt the power of the pirates, 
Meirion Jones finds outvhow 
computer companies are 
trying to combat them, 

NOT SINCF. Johnny Kidd had them Shakm' all 
Over nearly a quarter of a century ago have 
the pirates been such hot news. Everybody's 
doing it from the market traders selling bottles 
of dubious yellow coloured water under the 
misspell names of famous Trench perfumes to 
the upmarket jewellers selling bogus Canter 
watches faked in Mexico. 

As Terri Anderson of the British Phono- 
graphic Industry which has led the campaign 
against audio cassette counterfeiters explains 
"the whole business of intellectual theft is 
getting out of hand — there can hardly be a 
consumer product that you can't buy a pirated 
version of — shoes, jeans, records, 
software ..." Even some software house 
heads admit to the temptation. "If you could 
photocopy cars" says David Potter of Psion — 
the company that has sold over 500,000 Plight 
Simulator programs tn Sinclair owners "we'd 
all have Ferraris." 

All the problems that the computer industry 
now has with piracy — an unauthorised copy 
of j program is made every three secomh 
were experienced first in the audio and video 
industries. "Two years ago" as Peter Duffy, 
Director of Investigation of the film business'* 
Federation against Copyright Theft says 
"every feature Rim that was released was 
pirated (hat week or before it came out" 

The worst case was F.T which was seen in 
millions of British homes, months before u 
was even premiered in this country. Unlike 
British software bouses which originally 
concentrated their wrath on schoolkids 
making occasional copies to swop with 
friends, FACT went for the big boys. In 
alliance with BP1 which was cracking down 
on audio copying they helped force through 
the 1981 amendment to the Copyright Act 
Whkl) Duffy says "totally transformed (he 
position". 

Raids on counterfeiters put many or them 
out of business with £2,000 fines and two year 
prison sentences as a deterrent- Projectionists 
hurrying out of the cinemas late at night as the 
last strains of God Save the Queen died away 
were ambushed by police before they could 
make an undetected overnight copy for the 
video pirates. 

Audio tape counterfeiters wete also hit hard 
by BPI raids although it is still waging a 
"Home-taping is killing music" campaign 
against casual copiers and demanding a levy 
on blank tape to reduce the margin between 
buying an album on cassette and taping it 
from a friend. But as the 1983 law has made it 
more difficult for the counterfeiters to make a 




dishonest living out of audio and video so they 
have moved into computer piracy where as 
Quicksilva director Rod Cousens points out 
"the law is a grey area". 

Now that organised crime is moving in to 
computer game piracy the big software houses 
are taking a less hostile attitude to schoolkids 
who make a onr-off swop for a friend. "Kelp 
us smash the counterfeiters and we won't send 
the police in on search and destroy missions to 
the home of every Spectrum owner" is the 
message. 

The Federal inn against Software Theft — 
FAST — has been set up by the likes of IBM, 
Acornsoti, Sinclair, Microsoft, WHSmith, 
Thorn EMI and Virgin to get the same legal 
protection for software that already exists for 
records and videos. Nicholas Lyell the 
Member of Parliament for Mid Bedfordshire 
signalled the new initiative with a Ten 
Minute Bill in July which increases the 
chances that one day it will be made law. 

He told Parliament "The video pirates who 
used to make pirated copies of video tapes and 



PIRATE 
HOTLINE 



We want to know II anyone near you is 
selling counterfeited computer gam, 
We are not interested In Johnny ro 
door who has made one copy ot an 
outdated game but in people who are 
making money by stealing other people's 
work. You can often tell pirated tapes 
their leek of identifying marks an Ihe 
cassettes — for instance the butterfly 
marft on Quicksilva products. Phone 
Your Computer Pirate Hotline on {Ql) 961 
3465 and we will treat any information 
you give us in confidence. 



films, and whose activities are now being sub* 
stantially curbed by the Copyright Amend- 
ment Act 1 981 are now turning their attention 
to the piracy of software." He pointed out that 
"At least one operator has his own factory 
with sophisticated duplicating equipment and 
a substantial distribution network.'* He also 
explained the new realistic mood of the 
software houses "We arc not after the 
schoolboy, but we are after the commercial 
pirates." 

Industry figures like Quicksilva's Rod 
Cousens now see making copies for swaps ai 
"an occupational hazard" which needs to be 
stopped by "technological advances" such as 
the speed loaders which make audio copying 
more difficult, and increased use or discs and 
cartridges. Anyone copying "for commercial 
gain" will feel the full force. Quicksilva was 
one of a dozen companies which backed 
August's Artie co-ordinated raids in Hull on 
small-lime operations advertising their 
products in local paper*. 

Zap clubs too are on the target list of the 
companies. "They should be hit" says Mike 
Dixon of From runner software — pan of the 
K-tel group. Schools are blamed by many 
companies for not setting a good example 
"Teachers are the worst offenders" according 
to Ranald Robertson of FAST. He blames this 
piracy "in the educaiton field as one of the 
main reasons for the lack of good educational 
software". Companies are unwilling to invest 
in development if they ate going to sell 
insufficient units to cover the cost. That's 
why Ranald says "in the short term the user 
may gain but in the long term he will lose 

CIUI." 

The new conciliatory mood of software 
houses to their customers — instead of 
regarding them as the enemy seems to be 
paying off. Quicksilva has been surprised how 
many of the members of its Game lords club 
have volunteered information to their Super 
Pirates Squad — which has helped to squeeze 
out some of the counterfeiters. 

VOUB COMPUTE R. NO VE MBE H 1 984 73 




BREAKING 

AND 

ENTERING 



Confessions of 
a pirate. Our 
old friend 
Henry Morgan 
reveals the 
tricks of the 
zapper's trade, 
smashing the 
protection that 
hides program 
secrets. 



Hackers often derive a* much picture 
from defeating t company's protection 
mechanisms then breaking into the program! 
altering it to taste and making a back-up copy 
as they do from actually playing the thing, 
more so in some eases, This article specifically 
looks at some of the protection mechanisms 
applicable to (he Sinclair Spectrum, but the 
principles and the moral of the story apply 
equally to all home computers. 

Way back in 1982, when the first 
commercial Karnes were marketed for the 
Spectrum, very few authors bothered to 
protect their programs. Ii seems that software 
piracy had not been heard of. These early 
programs offered no challenge to those who 
wished 1o copy them, all that was necessary 
was to have sufficient knowledge to read a 
program "header". This is the very short 
burst of 17 byte* which follow the first "tone" 
when a program block is loaded into a 
Spectrum, and comprint the informal ion 
which the computer needs to know about that 
block; that is whether it is in basic or machine 
code, which part of memory it is 10 be loaded 
into, how much there is of it, does it auto-run 
and so on. 

It is very easy to isolate and read headers, 
and so no Spectrum program can ever be 
made absolutely secure. Most software loads 
in two or more sections, all that was needed to 
copy a program back in those days was to 
Break into the Basic block, save it with the 
appropriate tine to make it auto-run then load 
the code block and save it defining the start 
and length, all this information is available in 
the headers. 

Of course ii wasn't long before software 
houses realises that their work was all too easy 
to rip-off, and so a number of ingenious 
mechanisms began to appear to stop the home 




user from being able to break into the 
software. 

Two simple mechanisms which soon 
appeared were the DF-S2 and the ERR-SP. I 
will explain what these arc, If you read the 
Spectrum manual, you will find a section on 
the "system variables". 

System variables, also known as run- time 
variables, an? numbers held in a special pan of 
the computer's memory whose only purpose 
is to allow it to know what it is doing and what 
is going on inside it. PF-SZ is ■ good example 
of a system Variable, it lets the Spectrum know 
how many lines are to be reserved in (he lower 
portion of the screen for reports. Normally 
there arc two lines, and so DF-SZ holds the 
value 2. DF-SZ Can be altered by POKEing a 
different value into 23659, which is its 
address in the system variables area, if its 
value is changed to 0, then there will be no 
spare lines available for the reports such as 
Break to be written, and the computer crashes 
if one it encountered. So you cannot just 
break, into the program. 

FRR-SP is a tittle more complicated in thai 
it occupies two locations, 23613 and 23614. ft 
points to *n address in memory where an 
instruction is waiting to be performed if a 
report such as Break or Stop needs to be 
produced, tt is very easy to point this variable 
to a p*rt of memory which causes spectacular 
crashes if the program is broken into, simply 
by fiddling with the values using the Poke 
command. These two mechanisms will stop 
anyone from successfully breaking into a 
Basic program, but the Spectrum has a simple 
device to defeat them. 

A Bask program can be Merged instead of 
Loaded, and instead of auto- running just sits 
there waiting for a hacker to list it! Clearly 
DF-SZ and ERR-SP were inadequate on their 
own as real protection. 

As you know, blocks of machine code are 
normally loaded in and then run by short 
programs which precede them, using a 
I'sr command. Since it is » easy to disable 
any protection present in the Basic block, 
software houses had to look for methods of 
protecting the code itself. 

Load in short bursts 

Some programs can be found which toad in 
very short bursts of bytes after the main block 
of machine Code has been loaded, these serve 
to protect the main block which will crash if 
they are not present. Often ihery are mini 
programs themselves which modify the code 
in some way, either by providing data or by 



74 YOUR COMPUTER. NOVEMBER 1 984 




altering its position in memory. A determined 
copier will use his knowledge of header 
reading in simply load each section in and 
then save them sequentially, but wait . . . the 
copy crashes when run. 

This is usually because of another system 
variable, Frames. This is actually a clock, it is 
incremented 30 times per second and the 
value is therefore constantly changing. 
Frames occupies three locations, although 
only one is usually checked by the protection 
mechanism. How does it work? A short block 
of ihree bytes is loaded into Frames,, which 
will immediately begin updating the values. A 
short lime later, one of the first set of 
instructions in the code block will compare 
this, value with a prc-dcicrmincd value held 
somewhere, it doesn't matter where, in 
memory. 

If the result is not what a should be, that is 
if it was a copy then the program will direct 
the computer to do a system reset. This is not 
a difficult mechanism to disable, indeed there 
are several methods which hackers can and 
undoubtedly do use. Those with no know- 
ledge of machine code will normally alter the 
Basic Loader so that the block is loaded into 
Frames irrespective of where it was saved 
from. A more elegant approach is 10 
disassemble the offending section of code and 
nullify it. 

So, we see that the headers preceding blocks 
of code give the game away every time. It 
wasn't long before programs came on the 
market featuring sections of code which 








loaded in wit hem ! headers. To demonstrate 
how this works, it is necessary that you 
understand a little machine code, but do not 
worry, 1 shall explain all. The Spectrum Rom 
is actually a machine-code program thai 
carries out all the Basic commands, including 
those involved in loading and saving software . 
Indeed, a large chunk of Rom is devoted to 
these procedures. 

Save a block 

It is quite possible to save a block of 
memory and it doesn't matter whether its 
Basic or code or whatever without a header, as 
long as the microprocessor, the computer's 
brain, is first told tome basic tacts about what 
you arc doing. This has to be done in machine 
code, suicc there are no Basic commands that 
will do the job. The microprocessor — in the 
Spectrum its a ZSOA — can be thought of as a 
chest of drawers, with the drawers in two 
rows, and given letter*, A 8 C D E etc. These 
drawers are actually called registers, and 
registers next to each other can be paired if 
necessary, eg BC, DE. On its own a register 
can hold a number from U-255, but a pair can 
hold 0-65535. 

For a block to be saved without a header, 
the A register is loaded with the value 25% the 
IX register is given a number corresponding 
to the start of the block, the DE register pair it 
told the length of the block and the Rom save 
routine is called at location hc*04C2, which 
bypasses the header mechanism. 

Such header I ess sections are themselves 
loaded in not by a Basic loader, but by a block 
of code. 

The instructions which do to are extremely 
simple, again the A register is given the value 
255, the IX register to a position of memory 
where the program is to go to and the DE 
register pair the length. Also, the Carry flag 
must be set, the F or Mag register is a sort of 
microprocessor system variables, Carry being 
one of the variables, that is, given a value of 
"1", and the Rom routine called at hex 0556. 

The headerlcss system is ingenious, but it 
still relies upon a section of Code which must 
be toaded in the normal way, and this is 
vulnerable to anyone with a disassembler. An 
increasingly popular trick is to load in a block 
of code, often without a Basic loader, which 




apparently auto-runs itself. This is a very 
simple technique, but it can be very effective 
if combined with headerlcss sections. How 
docs a block of code autorun? As you might 
expect, it is due to our friends the system 
variables. You now know that these are 
continually updated by the computer and in 
effect at any one moment in time hold a 
complete record of the slate of the computers 
memory, 

[f a block of code is saved so as to include 
the system variables the Basic program area 
and also the machine stack, a few bytes found 
just below Ramiap, it will run when loaded 
back in from where it left of — code blocks 
which autorun include a USR command iusi 
after the save. For instance: 
10 SAVE "NAME" CODE 23552, 4000 
20 RAND USR 27000 

where 23552 it the start of the system 
variable. 

Copying a program saved in such a fashion 
is actually quite simple, and so it is really Ho 
deterrent to the hackers. If the program is not 
too long, a budding pirate could simply clear 
Ramtop la a suitably low address load the 
code above it and save from there. 

When you want to play the thing, you 
merely load it back to the original address. 

If the program length is too long to allow 
Ramtop to be covered to a sensible level, the 
pirate merely needs to generate an error report 
— but how? Quite simply, he or she loads the 
block in using either a machine coded loader, 
as previously described, with a length speci- 



PIRACY 



fication set too high. On encountering 
insufficient bytes on the tape the computer 
would be put back into Basic, allowing the 
hacker to continue from there. Easy isn't it? 

Bui you say. what if DF52 or ERR-SP had 
been previously set? If you remember, the 
save routine produces a report in the lower 
screen when actuated, and so no auto-run code 
block can have these mechanisms. Unless it is 
a header less block! 

What does one do if the program block 
occupies the full length of Ram from 16334 
the start off screen Ram to 65535 P- 
Ramtop, Again machine code is resorted 
to, but this time a short program is written 
from within system variables to load the 
program at a header less block from 16334 to 
65535 but excluding those bytes occupied by 
the loader. Such programs, complete with 
headcrless files are no longer rare. 

All the mechanisms that I have described, 
and one or two t still have up my sleeve, 
cannot stop a potential pirate from connecting 
up two cassette recorders and simply dubbing 
the programs. What they do however is make 
life awkward for the hacker, it doe* nothing to 
stop the large scale criminal pirates who are 
the ones that actually defraud the companies 
of their money by copying tape to tape, t do 
not believe that schoolkids or hackers defraud 
the companies of much revenue, simply 
because I am sure they probably spend all 
their available pocket money on games 
anyway, and even if they do pirate a few 
copies, in most cases simply because they've 
already spent their money. 

The cuke i* only so big. Is there a system 
then i hat is fair to the hacker that actually 
buys the tapes, but makes life awkward for the 
large-scale pirates? There is* Owner? of Jet Set 
Willy by Software Projects, or Night Gunner 
by Digital Integration will have noticed a 
protection mechanism requiring the input of a 
code before the game could be played — once 
again it is easy 10 nullify such a. mechanism 
but the long scale copiers who actually need to 
mimic both the game and cassette inserts need 
to go to extra trouble — perhaps they won't 
bother. Mat hew Smith with his Jet Set Willy 
could have made life difficult for the hackers 
with headerlcss files and so on, but chose not 
too — and witness the result. 

Immense interest was generated in his game 
leading to all manner of Pokes heme 
published in many computer magazines, 
which I am sure generated more sales revenue 
in turn — free advertising. In conclusion then, 
what is the hackers view? 

The hacker probably likes a bit of a 
challenge, but no unfriendly 48K headerlcss 
autorun code blocks. He likes to dable around 
in the code, and may perhaps make a back up 
copy or two. How much doc* thi* defraud the 
software company? Not much. The only 
mechanisms so far which actually inhibits the 
large scale tape pirates is the colour code as 
seen in Jet Set Willy — and this is no obstacle 
for the hacker. So, 10 out of 10 far Mir hew 
Smith and his fertile mind, t will certainly be 
looking out for hi* next offerings. 

YOUR COMPUTER, WO WM6CR ' »W4 7* 



IMAGINE :WHAT 
WAS THE NAME 
OF THE GAME ? 

In 18 months Imagine shot from nowhere to the 
top and back again. Many blamed piracy for the 
collapse. Imagine's operations director Bruce 
Everiss disagrees . . , 



The popui-AR misconception of Mersey* ide 
is ofi riotous Toxtcth backing onto strike- 
bound doe**, People Ke it 43 * fluke thai the 
Area has been the centre for pop music for the 
Lust 20 yon. Now Liverpool's emergence as t 
lending force in the micro industry seems some- 
what sutreal- 

The reality is that Mersey side has a fail shale 
of the electronics industry with major 
companies such as Plesscy and Marconi, The 
area also has an unfair share of traditional data 
processing with lots of big installations such as 
the National Giro, Royal Insurance, 1-iulc- 
woods, the Ministry of Defence, BICC and 
Unilever. A further factor is the excellent 
reputation of the computer departments at 
Liverpool University and Liverpool Poly- 
technic and also the private sector naming of 
computer staff at K.BS 

Against this background i| is not surprising 
that one of the first computer si ores irt Britain 
was set up in Liverpool and traded successfully 
in 1978. Microdigittl'* customers set up some 
of the earliest and most enthusiastic computet 
chibs in the country. MicfodigilaTs stall often 
leli to set up or work for new microcomputer 
firms, spawning an industry. Two well-known 
eX'Microdigilal staff are Eugene Evans and 
Mark Butler. Microdigital was absorbed by 
Laskys in 1980 which resulted in yet more staff 
leaving to work elsewhere. 



Among the Liverpool companies was one of 
the first games software houses, Bug- Byte, 
owned by Tony Baden and Tony Milnet 
Then, as [WW, the two Tonys ran their busi- 
ness cautiously , prefer luig safe gradual growth, 
'two staff at Bug-Byte, Mark Butler the sales 
manager and Pavjd Lawson a programmer, 
dtd not agree with this policy and sought a 
more aggressive approach. 

Both were offered, and turned down, a share 
in the ownership of Bug- Byte. Put to the dash 
of personalities David Lawson was given 
notice in late 1982 followed by Mark Bullet 
who left Of' his own volition They formed 
Imagine Software, 

Knocked on doors 

David wrote a superb I ralaxiansJ'I.rivaders- 
type shoot -'cm-up game, Arcadia, for the 
Vic-20 and Spectrum Mark Butler knocked On 
doors and sold it. There was a shortage of soft- 
ware in the shops at Christmas 1982 which 
Imagine met by doing deals with duplicators 
and by trucking software all over the country, 
Arcadia went to number one and stayed there. 
Imagine invested the proceeds of it* success 
In advertising and started a high-profile image 
that Was 10 remain 

The economics of games software is like 
high-stakes gambling. To launch a. game pro- 
perly costs anything from L 10,000 upwards 




and if it fails all is lost. If it succeeds it is a 
licence to print money as the manufacturing 
cost is so tow compared to the retail price. 
Through 198) all Imagine releases succeeded 
and thus Imagine became the undisputed 
number one game* software house, 

David and Mark found themselves in a situa- 
tion that they were not equipped to cope with, 
catapulted from obscurity to fame and fortune 
in a few short months. Realising this they 
sought advisors, both professional and 
management. This, advice, by and large, made 
Imagine more successful still. Eventually, how- 
ever, by taking wrong advice and ignoring 
sound council, decisions were made that led to 
the downfall of Imagine, 

Mistake number one was that Mark and 
David believed that Imagine's success proved 
them to be good businessmen and that they 
could thus apply their talents to Other busi- 
nesses. Against advice they tried to run an 
advertising agency, Studio Sting, along with 
Steven Blower, They gave Steven 10 per cent 
of Imagine and in return each owned a third of 
Studio Sting, Studio Sling failed. The reasons 
behind the failure are many but include the 
following: First, the relationship between the 
two companies was never defined and areas of 
responsibility were never laid down; second, 
there was insufficient management resources to 
have any control over events or to institute 
systems; third, when things started going 
wrong the relationship between Steven and his 
co-owners broke down. 

Mistake number two was not employing a 
professional accountant until just before the 
end, again against advice. This meant thai there 
was insufficient financial control. It was not 
possible to discover whether anything was 
profitable or not. Money was spent without 
knowing whether it could be afforded- Funds 
were not available when they were mosi 
needed. Incoming invoices were paid without 
being checked. 

In the beginning none of this mattered 
because ihere was no much profii to finance 
them — hence the downfall. The wages bill was 
over £50,000 a month, not because of high 
wages but because of the large number of 
employees. 

The rents and rates bills were enormous 
because of the insistence on prestige and 
because of moving twice to bigger premises 
while still paying for the premises vacated. 
Comparatively little was spent on advertising. 

Mistake number three was the refusal to 
manage technical Staff. David LaWson insisted 
that programmers, artist* and musicians were 
Special and that any attempts of management 
would reduce productivity, obviously the 
reverse is true, While the administrative, sales 
marketing, accounts and warehouse staiT were 
well managed and earned their salaries the tech- 
nical staiT could do as they pleased. This was 
excused on the basis that they worked at home 
or because discipline would reduce creativity. 
The reality was that it took over 50 technical 
staff to produce Imagine's products, usually 
late and usually with bugs still in them. 

Mistake number four was to be taken in 
by their own publicity instead of reality. 
This is an obvious human failing but one 
which they were warned to guard against, 
especially as the publicity seemed to create a 
largely false picture. An example is to take a 



76 VOUft COMPUTER, NOVEMBER 1 984 



Operations director 

Bruce Everiss' 

"The economics 

o! games 

software is 

like high-stakes 

gambling." 




programmer and make him famous; after thai 
no matter how good he is at his job he is held in 
esteem because of his publicity. 

Mistake number live was the Marshall 
Cavendish project to produce 26 games across 
five machines — this was worth as much as £\ 1 
million to Imagine over two years. The first 
problem was not to give these games sufficient 
priority, thus losing the contract. The second 
problem was keeping on the stall' and therefore 
the overheads after losing the contract. 

Mistake number six was the Megagames. 
After six months work and ai a cost of several 
hundred thousand pounds the games were no- 
where near completion. It was obvious that 
Imagine could not afford the cost of writing 
them never mind the cost of mass-producing 
the special hardware necessary. Despite this 
Imagine'* best resources were committed at the 
expense of producing any good "ordinary" 
games to pay to keep the company going. 

Internal politics 

Mistake number seven was allowing internal 
politic* to flourish. The tougher things 
became the worse were ihe politic with certain 
people looking after their own naked ambition 
ai the expense of the company. Certain wives 
were allowed To interfere at will with the 
running of the company. It became difficult for 
staff to identify the motives behind actions. 

Despite the maeock rise and fall of Imagine, 
some good things have come out of it. Imagine 
created the market as we now know it. By 
deliberately having a high profile and with the 
use of hype, especially in the national daily 
press, the games software industry was born. 
Prior to Imagine the industry was small and 
fragmented with its products appealing to a 
small specialist audience, Imagine popularised 
the industry and created a switch in consumer 
spend. The industry has gone from mail order 



to high street multiples. 

Imagine led with product quality. Look at a 
few prc-Imagine games and be amazed at their 
crudity, imagine set standards in payability, 
originality and use of graphics and sound that 
were quickly imitated by the whole industry . 
When Ultimate got ahead in graphics quality 
Imagine responded by employing professional 
artists to produce the bit patterns 

Imagine was departmentalised with clearly 
defined areas of responsibility and a well* 
developed management reporting system. The 
rest of the industry has largely followed suit. 



Imagine showed the way with marketing 
ware as a mass consumer product! Good PR is 
essential these days — Imagine was the first. 
Every new advertising idea, was subsequently 
copied as were the insert cards. 

Imagine had the first professional sales team 
with a sales manager, telesales and export tele- 
sales, sales and market research and an export 
manager. For the first six months turnover at 
least doubled each month l.vcntuaHv, Well 
over half ail sales were from export. 

Imagine was developing a new type of pro- 
duct that was enjoyable as a game hut which 
educated the player. The first stith product, 
Sidney Meets His Match, was completed but 
never marketed. 

Imagine was starting with the use of profes- 
sional psychologists to look at game playing pa 
u. By looking at the motivation the hope was to 
produce more playable, more addictive games. 

Imagine's contribution 

Imagine was looking at alternative input 
devices including electrodes to monitor brain 
waves and thus allow thought control of games 

The best thing to come out of Imagine is not 
yet obvious. Time will surely show that those 
people who worked at imagine have a lot more 
to contribute to the microcomputer industry. 
Already, there are former staff working for 
Ocean, Bug-Byte and Software Projects using 
knowledge and skills gained while at Imagine. 
Many former staff have now formed their own 
companies doing what they did at Imagine but 
reaping the rewards fot themselves. 

Already, there are at least five new companies 
on Merseysidc composed of these people. It is 
too early for any of them to have made ihcir 
mark but there is little doubt that they will. A 
small dock of Phoenix rising from the ashes of 
Imagine. 






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Printers 

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Andrew Capel 1 
speed loader also 
makes programs 
tough to crack for 
audio-copiers. 

VFL IS AN alternative DttB&scttc communica- 
tions program for the CBM-64. Not only doe* 
VFL improve on speed and reliability bti! on 
versatility as well. It runs in approximately 
1.5K bytes, and fluctuates berween 1,500 and 
$,000 baud giving an average of roughly 2,200 
baud for an evenly distributed file. 
Heft is a list of VFL's feature?: 

■ Communicates up to 9.5 times faster 
than tha normal kernel routines. 

■ Runs directly from Basic replacing tha 
original CBM V2 Load, Save and Verily 
commands. 

■ Code may bo saved without resorting lo 
machine code. 

■ Code may be force-loaded to any 
specified local ion. 

■ Invisible loading facility, preserving the 
variable pointers, 

■ Full error reports. 

■ Occupies no Basic program area. 

■ May be called In machine code using the 
standard kernel routine addresses and 
formats. 

■ Visual and audiotask completion signals 



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USTiO IWTFPC52^60fl5"?^P?OO5«tCl00?$ 
ll*Gfl PRTBC^?O9P?1O?flO?»9P32O30077 

tt^o PPrftr^^ew^-^p^^rjT^noir^i 



MfEW ! <*« 
I17W1 PPTCfi-' 
11T10 IWTflfV 

lf*?o DflrFrc^OP?ni^ 

11^40 rmT.^ 
ii-^n r»> 

" ■ 1.1-1' 



?OrjR002S)'- 
... 



r?OOF! 



78 YOUR COMPUTER, NOVEMBER 1 984 






-UP WITH CiROUdlNCi OLP 
C0mP703>0/ZB f JZ£tn£MB£R 
FH$T£R. THfW YC 




■ Full mo I or control. 

■ Retains video output 
To link the new routines to the operating 

system the system vectors I Load and ISavc 
must be altered. A small program within VFL 
changes these vectors and may be called by: 
SYS 50473 
Once I Load and I Save have been changed 
Basic will caJJ on VFL until: 

■ Obviously power down. 

■ A system restore is called. 

■ A 6510 BRK Instruction Is execuled 

In cases two and three the system call above 
wtll rechsin VFL. Case one pose* much more 
of a problem. 
SAVE 
SYNTAX: 

SAVE i< FILE -NAME STRINGH 
KDEVICE NUMBER>], 
^SECONDARY ADDRESS 
NUMB£R>| 
DEFAULT : NULL STRING.1,0 

Only the first 16 character* of the filename 
arc saved on the header. Names shorter than 
the limit are padded with trailing spaces. When 
a colon is included anywhere in the file-flame 
string it will signal the end of the file-name and 
the presence or two numeric parameters. These 
two numbers represent the addresses of the 
first and last bytes sent to the Datassette. 

They should be written in hexadecimal, pre- 
fixed by a dollar sign and separated by a dash. 
Spaces are permitted between the colon and the 
first dollar sign, the last digit of the fust 
number and the dash, the dash and the second 
dollar sign and between the last digit of the 
second number and the end of the file-name 



string. Leading zeros are allowed but syntax 
errors are flagged on any occurrences of: 

■ Illegal digits. 

■ Numbers not In range S0-1FFFF. 

■ Second number Is less than the first. 

■ Any character other than a space 



be I ween the colon and first number, hrsl 
number and dash etc 
The secondary address number: 
Bit = code relocatable on toad 
Bil 0= i code may not be relocated and Is 
always loaded back at the address Irom 
which it was saved 

Once your command has been accepted the 
usual motor tests arc performed, which may 
result in a prompt. When the appropriate keys 
are dosed VFL pauses for ■ second to allow the 
Dataucne to reach operating speed. While the 
header tone ii being sent the border displays 
static, red and cyan bars. When data is being 
transmitted the bars arc mote active, are 
narrower, and change to light grey and light 
blue When all the data has been despatched a 
tone will sound and the motor is stopped. An 
example is: 

SAVE"FREDMO00-$30O0",1 ,1 
This saves one byte from address 12768 with 
a iilc-name of Fred (+12 spaces) and protects it 
from force-loading. 
LOAD/VERIFY 
SYNTAX: 
LOADKFILE-NAME STRINGH 
KDEVICE NUMBER 
KSECONOAFIY ADDRESS 
NUMBERX 
DEFAULT : NULL STRING .1.0 

The file-names on the cassette arc only com- 
pared a* far as the length of the filename in 
memory up to a maximum of 15 characters. 
Any character* over this limil will be ignored 
but no error will be generated. If a program is 
saved by typing; 

SAVE "HER BIO ATIOW 
it may be loaded by typing: 

LOAD'HE RBI" 
Again a colon is significant, but in this case 
only one number is expected by the syntax. 
(continued en p&ge 81) 




The preloader, 

19 REM* PRELOADER CO RM. CflPl E 1984 

20 Pte?EEKC2034):XFP B 43THEH88 

39 POKE2034 . P+ 1 - P0KE3328B - 6 F' " 3,6 

40 PRIHT"mW«iai , imWP«PtP»»PM»»»MI*;Fl. IS LOADING* 
50 FORF=lTQ2Cje0 : N£XT PR INT "3!" 

60 FWE5S,207 PGK£32,2e7 

?0 LORD"** 1, 1 

80 PP3NT"7IWIWWIWHllI!«I«fP«P»i»iii»»iim3fv'»'L HRS LOHBEDrW" 

90 POKE36f lfc>0-piJKLv '^-H 



«473 



Y0UK CUMPUTEH. NOVEMBER 1984 70 






THE DISK DRIVE YOUR MICRO 
WOULD CHOOSE FOR ITSELF 



THE TEAC 5V4 DISK DRIVE FOR THE BBC B' MICRO 

Any sell-respecting BBC 8' M icro seeking a disk drive ol high rel lability 
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major systems applications all aver the world. 
Now available lor the home, educational or oftice user by mail order from 
Computamate. the TEAC 5 VI" Disk Drive guarantees trouble-free high 
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• Single and dual models available with capacities up to BOOK, ( All 80 
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• Fulty stacfcable, plus extending tilt-action Megs" to ease disk 
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• 12 months parts and labour warranty, 

Computamate is supported by the resources 
ol a major multi-national 
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Single Drive in Hll-posUi on 








to order: 

si -complete the coupon 
.. your requirements and return to: 
Dept. YC 11, Computamate Data Products, 
la Road. Bursiem, Stoke on Trent. ST6 4DX 
ose your cheque P.O. (made payable to 
putamate) or use your Access Barclaycard number. 
tephone -ring 0782-81171 1 to purchase 
tone {credit card holders only). 



INTRODUCTORY PRICES ONLY 

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Post to: Dept YC11. 

Computamate Data Products, Scotia Road, 
Burslem, Stoke on Trent, ST6 4DX 



Postcode. 



-Teieofiofie. 



"(ertdosecfiequef TorSL 



' Heas* debit my Access? fiarctaycard Number. 



Signature. 



rat*i ! 



(Credit Card orders musi be siflrveo by trie card holder, Address above 

must be the same as card holder) 

" i Please delete as appropriate) 

For funner information on these products, or lor details of other exiting 

products , incl Jd ma TEAC 3 W and 3 ' Disk D rives , telephone G7S2 

111711 

Enquiries trom Dealers and Educational Authorities welcome 



SO YOUft COMPUTER. NOVEMMH t984 



(continued from page 79} 

This follows the format as described in the 

Save instructions and will give errors for the 

ume reasons. Its value represents (he address 

of the memory location where the first byte of 

i he wived file wilt be stored. Enclosing a force 

load will automatically over-ride Fit of the 

load secondary address number but wiU be 

over ridden by Bit of the save secondary 

address number. 

The secondary address number 

Bit = Code loaded io the address 

supplied by the force load. 

Defaults to S03G1, ~ 

Bit 0= 1 Code loaded to the address hom 

which It was saved, NB. This bit is 

overbidden by a force-load value. 
Bit i =0 The variable pointers are redefined 

according to the address of the 

last memory location altered by ihe 

load command. 
Bit 1 = 1 The variable pointers are restored 

to their values prior to the load 

command. NB. Basic toad destroys 

alt present variables. 
Once VFL finds a header file the file-name 
and addresses of first and last bytes of wive are 
displayed On the screen. These values are 
derived from the header information and may 
not be the Addresses of the code's destination. 
When VFL is searching For the correct fdc 
the border displays red and cyan bands. Once 
the information is being read the border 
flickers light grey and light bluc r To stop the 
CBM/Run Stop key combination resulting in 
an immediate break error, follow these steps: 

■ Hold the CBM key down. 

■ Press ihe Run/Slop key. 

■ Release the RunfStop key. 

■ Release trie CBM key. 

On completion of Load, Save or Verify 
Commands u tone Ofl osdlUtOr one will be 
triggered. To achieve this VFL sets the pulse 
width registers, the frequency value and the 
ADSK controls. VFL ihcn gates ihe pulse 
waveform producing a ping sound, however 
the master volume control is not aiTected. To 
make this tone audible the M VC must be set to 
some non-zero value. 

To make a copy of VFL these instructions 
must be followed carefully. First key in the pre- 
loader program and program 1 then save them 
on two separate cassettes. It is important that 
the listings arc followed to the letter, as line 
numbers and Rem statements arc important. 
Also the preloader program must not be Run 
before it is Saved on tape. 



Now try Running program I . 

Each line contains enough information to 
generate eight bytes of object code. The first 
four hex digits give the address of where the 
first of the eight will be stored. Next follow 
eight pairs of digits giving the values of each of 
the eight bytes. Finally another four-digit 
number gives a check sum relating to values of 
the first 20 characters in the data line. If an 
error is generated, correct the offending line 
then resavc, verify and rerun (he program. 
When a code OK report is flagged resavc the 
program just to make sure. Now type New and 
load in the preloader. Without rewinding the 
tape ivpe: 

SVS 50522 
and press play and record en the datasscttc- 
This saves a copy of the object code. Now 




rewind the tape and engage the auto load/run 
sequence. The preloader should load in the 
object code, chain VFL to basic and clear itself. 
If Save, Load or Verify errors persist check 
program I, correct it, and repeat the code 
saving procedure. 

Program 2 may be used to disassemble the 
object code. If you use this routine to debug the 
code file, note that there should be no invalid 
opcodes before the address 50569 decimal 
(*C58S he*). 



Proffwn 2- 

10 PET1 PROWWtt TWO <C> m CflPLt 1984 
7» POK£53;j8Si,&.pctfE^2si.s m int -a-, 

199 Bints <16V FOP* "BIO?*- RETOI*'F> he>:t Di«c#as> 

101 W0,****-4E5C4r.4C4E2K2E4Q4EeiOC4E4Er/it E4" 

102 C*U>--. EGE4r.4E4E7X7f.4e4E9E4E4E4EBXBE4- 
105 C*<2)--?l*3t4t4>2f^JZC4t4t8J3t4>l*tJH.4- 

104 C*0>""W I6Ut4L4»7J7t40<l*3t4l4r4»f W«" 

105 C»'!4>'--L4 3Ht4£4 2«[4F4 UC3HM ICIM" 
10* C*<3>-"- 6[4[4f.4 7C7E424 3C4C4E4 8C8E4" 
10? C*^S>-*W4«E4(4[4»2K2[4H44tHK3f4>,«lKll4" 
10* Ktt?t^ / ■«I4t4C4#7K?t*04a9t4t4[4»W^E4- 
109 Ctr0>«-|4ff3t4t4T2PK2[494I4K4r4TlRlSil4" 

1 1 C*r3 >-'* RCE 4t4Trp?S<E4?4R3V4I 4E4R3I4F4* 
til Ctf 10>--Be*3W£4p2*2Mi(*V4rteu*t4*:%lHU*- 
11? C*<ll>--' «t4HB?»?fKt4?<**9W4H&«e9«3t4- 
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zee ppiht-:» *»• dis-h-ssetoler to ftrtc i«ra< »••■■ 

203 INPUT'* STRfTT REDRESS 49S32JHBavar RD 

JIB INPUT"* END RHWeS$ ., ,..,.,..„. 5TO7 CM B 1W ' ■■ EM 

229 INPUT -1 OUTPUT DEVICE **. WBEP 3*HTDE 

233 INPUT"! SETONDWV HftDPESS ...... . CaWT Sfl OPFM4 DESfl 

233 PPIHT44 PF1MTW." BISftSSEMLV OF" , ftp, TO" EM PRINT" 
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299 HX-flD*l D*PEEtf<HD) EiOSUBSaee Ot-0*+- -+D* V*»rn+"f h-n-1 

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339 V»--I-+V»*".X- OOTB370 
349 Vf--|-^'J*- y- rj*JTfJ370 
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9990 »!■"- FQRF-ITOL ftt-H/16 P«P-l»f»p:r*4>? WK 1 F R537THENR-R+7 

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?05* DfiTRTFrv raX'TMR TX? IVn.*" 
9040 antBi.2.1.^ £.12 1 



I9H cotuwau nctuHs 



And vou thought 



i 



'pML!Klt!lUMHD 



Coming soon to save the computer world ! 



cUVisioN 

>%>ur computer was made tor us. 



YOUR COMPOTER. NOVEMBER 19S4 fa 







CHALLENGING SOFTWARE 








1 PSYTftQN. SPKTWJMACOMOOQflfW 
LORDS Of MIDNIGHT. SftCTHjM 
DOOMDARKS REVENGt, SFfCTSUM 


BEYOND 

ORDERUNE 01 837 2899 


P$rWHRRiOR. SPECTRUM 


MYCHESS JJ. COMOOoef *4 


Mr. R< JMOOCWE^ 


<AZrfC.cOMQDOftFA4 


KH. COMOOOffF 64 



BEYOND, Competihon Hou^e, Fftfndon. Market Harbofough. Letcesters/we LE 1 9 9NR 




Unique technology: British mode 
laminated glass, aspherically curved 
Contrast Enhancement Antiglare Filler. 



the clock by phoning the CEAF 
Department on (091) 414 5511, quoting 
your Access Card number. For other 
screen sizes, please ring or write — 
the CEAF prices for "specials' would be 
considered very competitive..,, if there 
was any competition! 



Up to now, comrast^nhancing filters 
have always been fiat — and so has their 
performance, because the screen of your 
TV\ monitor or VDU is curved. 

Up to now, most filters have been 
plastic — because it takes mindbending 
technology to bend optical-quality 
laminated glass. 

Up to now, filters have 
been expensive — awkward 
production techniques 
have meant price 
tags from around 
£50 to well over ElOO. 

For Ret all that: 
the Rom am CEAF is here 
British designed and 
manufactured by space age military 
technologists. CEAF is profiled to fit 
your display screen, giving you the 
ultimate in contrast enhancement and 
antiglare performance. For under £20. 
this first generation of eye- friendly 
filters diffuses all specular reflections, 
gives sharper image clarity from edge to 
edge of the screen and greatly enhances 
display colours 

Mounted and removed in seconds by 
invisible velcro fastenings, the anti- 
static, anti-shatter CEAF is a major step 
forward in the operational safety of 




computer displays -unprotected screens 
can cause blurred vision, watery and 
itchy eyes, headaches and (according to 
such authorities as the Institute of 
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changes in eyesight. 

Scratch-resistant, durable and easily 
cleaned without expensive sprays and 
agents, 9", 12" and 14" 
CEAFS are available from 
leading retailers at only 
E19.9S including VAT. 
Or fill in the Freepost 
coupon and your 
CEAF will be despatched 
within 48 hours. Orders 
can also be placed around 



r~r* 




BOAP ftoc by n)nrt**| 



MMM 



To ROMAG.FREEPOSTXEAF Depi. YC, 
Slay dun an Tyne. Tyne& Wear NE214BR. 
Telephone: (091)414 9611, 



MyTV.'Monitor/VDUls:. 

(model) 

My Computer is: 

Please send me: 



. (make) 
(size) 



(make mode!) 



_9-CEAF<S) 

.trCEAF(,S) 

,14-CEaFW 



at 119.95 each. Inc. P&F. 

lenclosecheque,jP,0, No , 

for £ made payable to ROM AG. 

OR My Access Card No. is 

n 



rn 



1 1 1 1 1 1 1 1 1 n 



Name 

Address 



Tel: 



ROMAC 



The Alter which el Imlnate* aU competition 



BVERYnHNQ is going wrong For Professor 
11 i!fc today, First, he leave* his laboratory after 
■ bad day's work to get * bile to est. When he 
return!, it is only to find that be left the power 
on, connected to his experiment The circuitry 
has overheated* and caused his generators to 
fail, sending massive power surges throughout 
the laboratory- This ha* caused a fire to break 
Out, tad if that wasn't enough, it has somehow 
caused ail his chemical apparatus to come alive! 

But, all is not lost for Hilfe. For the main 
pieces of his pride and ioy, Frantic his robot, 
are still intact, although scattered around. If he 
could just manage to carry each piece, eras, a 
tune to Fmnkic's bed (hen his lift's work might 
be saved But Will it all end there?' You have to 
guide Professor Hilfe around hi$ laboratory 
avoiding Barmy Rumens, Crazy Conkals, 
Terrible Tcsc-tubes and the like, taking one 
part of Frankic at a tunc to bis bed. 

I have written a special loader for typing in 
the hex codes, which are extensively check- 
summed, Another problem created in the 
writing of this program, is that the code is: 
in one place. In fact roughly two-thirds of it is 
above RAM top, and the rest below: 3K in a 
Rem line and a further 1 IS bytes crammed into 
the printer buifcr, For this reason, we will have 
to modify the hex loader twice to put the code 
in place. 

So, Tim things first. It is best to have at least 
one totally blank short tape on which to put the 
finished product, and another on which to store 
the hex loaders and half- finished efforts- I shall 
now detail the procedure step by step; 




SIMPLEX 



1. Type in the loader program for the 
finished game, but don't run it. Save this at the 
beginning of your blank tape, using 

SAVE "A LIQUID" LINE 1 

2. Mew the computer, type 

CLEAR 26969 
and enter the first ver-ion of the bexloader. 
Save this on another t. pt 

i. Now start typing in the main bulk of (he 
nwKiw code, from Dump 1. If at any time you 
wish to slop and start again later, type 5 and 
then save the program on the other, non-final- 
ised tape. Enter the hex digits one row at a time 




Loader program tor finished games. 



tCB = =**? 




h§ 1- TO 1ft »C-3! 

"HEN POINT »".Hf 

- -i PftlKT 



a ^ :e -ofl& "■■- 

-- 

The hextoader 

s c-Cf r»N i m *ie — -ode hi . 

-t«- 17 ANC- H2I2 "*"■ ■ fCODB «* 2 
: - - RND Hf (2 '©"l 
10 *0P U»aOS70 TO 32767 STEP * 
12 PR£MT ■■ _ET Ca0 PC'-E 255 

53.5 INPUT LINE Mi 

la TttEM 30 TO 10J 

n«a"E" ~HE 
20 I* _£'. -i lfl --£f- PPIMT 

Deep . . - ;c n TO is 

LI FOB Hi; 

2* soke ■•• - M*tH»a+j ro » 
»2»2 le~ ;»;-peei> m*h 

PRINT ' HflrUS+1 TO M*£+2 



ERROR' 



©ECP . : 3 



: 



28 r*E ,w H 
30 I" Ft. - 

: 256i 

II WEx 
! 

tO SBUg 
£ Hi CODE 
i960 
110 PRIUT 

RANOOrtl 
WW CODE 

ECt< Saeri 

The Ram creator. 

IS *:$. tt*32fie0 TO 32644 READ 

■v£.9i 1 148 11. «0E 

.06,22 - 03 92 34 3 2 

? E - 30 ?t 

234,: ; 68.35,115 II 

177 "2 2*9 33 3* 13,201 



"fiR" LINE . 

CODE 26970, N-i 

SRVED. . . " STOP 

ZlERP 26969 L 
LfiT H»PEEH 2367C+2: 

CL6 so TO 12 



with no spaces, checksum included, The listing 
format will be the same as it is hett, W at toy 
time a checksum docsn*l correspond to the total 
modulus 256 of the eight other bytes entered, a 
Seep will sound, and you will get the same 
prompt address to enter thai row again. 

4. Once you have finished this, the loader 
will end, and you Can save the resultant code 
after the loader program on the finalised tape: 

SAVE "MCCOOE 26970.5796 

5. Now edit the following lines of the he*- 
loadcr and change them to: 

10 FOR N = 21363 TO 23481 STEP 8 
190 SAVE SO FAR" LINE 120 : 

SAVE' XDAT'CODE 23363.1*8 
120 RANDOMISE N: LOAD'" "COO E : 

GOTO 12 

6. Run the hexkutder again, and enter the 
data from Dump 2, the printer butler dam, 
When this is ill correct, tvpe: 

SAVE XDAT"COE5e 23363, 11 B 
and record on to the finalised tape. 

7. Next, edn i he hex loader again: 
10 FOR N = 296Q0 to 32755 

100BAVE "AS SO FAR" CODE 29800, 

N- 29799 
120 RANDOMISE N : CLEAR 29799 : LOA0 

"'CODE: LEThl « PEEK 

23370 + 256 'PEEK 

23671: CLS: GOTO 12 

8. Now type as a direct command 

CLEAR 29799: RUN 
and enter the codes from Dump 3, once again 
use S to save a partly finished version 

9. After you have finished this, do not save it 
on the finalised tape but (he other one, and 
with: 

SAVE" REM UN E 'CODE 298002955 

10. Now pull out the plug or otherwise dear 
the computer, and type in the Rem creator 
program; take cure with the machine code in 

(continued on page 87} 



YOUft COMPUTER, NOVEMBER 1984 85 



LA 



ON €64 

For those 
who demand 
excellence 




my a nm 



\t J'j/TJSTn jj; 



und the screen 

U am holes as ha 

searches for ancient rerics, 

{.have to avoid the lumps 

lava being continually 

' down on Jim from the 

' ano in this highly 

. ffo inaf fun gams. 

4 full graphtcviftpction screens. 

THeveli of play. 

score feature, 

..aadina cassette. 



iLiiiur] 



am 








COUHTDOWH 
TO MELTDOWN 

An amoiing graphic 

action adventure game which 

puts you in charge of a team of 

androids trying to reach the care 

of a nuclear reactor before it 

explodes. 

This gome frnj over 2000 roams to 

be negotiated and every single 

one of them Is in 3D.'.' 

Ptabably the mast exciting 

game yet developed for 

ff»C-44. 

fast loading cassette. 



BltfBMOTH£* 

This is o delightfully original 

game which uses nature as the 

setting for a highly compelling 

and challenging game* Quid* 

the Bird Mother as she builds 

her nest and raises her young, 

finally protecting them from a 

predator hawk. 

fast loading cassette. 

The stunning graphics and music 

in Bird Mother are not to be missed. 



murrniinnxMiii 



COUNTDOWN 

MELTDOW 



f^tf 



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WING COMMAHDEft 

This is a highly sophisticated 

flight combat simulator which 

puts you in the pilots seat, 

Highly advanced machine code 

programming has ensured you 

reef every stomach lurching dive 

and roll. 

With 17 separate controls to be 

monitored and several ground 

targets to be defended from the 

attacking enemy bombers. Tt 

game wilt stretch your skills 

their limits, 
fast loading cassette. 



HJICOUMff' 






m 







Available from All good computer software stockists. 

Send me i tick as required ) 

C JAVAJWITNCE163IC64) £7.95 

COUNtOOWNT0M£lTDOWNTNCE3r31C64l £7 95 

6 1 RO MOTHER I VC C?63 f C64 \ £7 95 

WING COWMAN PER -NCE203'C64i £.7*96 

D My Jocal stockist's address 
D Ybur full list of games 

Game/ s at £7.95 each 

+ single P&P sum 

Total toserKi 



Method of payment 

By cheque of PO i r»o ca $h I made payaol e 



to TECS 

or 

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Credit card sates: UK buyers only- 
Response within, 21 days. 



Creative Sparks. 

Department MO. 

296 Famborough Road. 

Famboraugh. Hampshire, GU14 7NF. 

Telephone; <G252j 518364. 

Name 

Add res* 



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YC1184 



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VOUft COMPUTf R. hfOVEMBEB 19B4 









At last the ideal home 
for your home computer, 

ONLY 




And some neat ideas 
for your video & hi-fi too* 



I 



THE SLIMLINE VIDEO UNIT 
The mgeruous tabma houses both your TV and video 
m perfect harmony whatever their dimensions The hand 

some smoked 
glass doors with 
magnet* caches 
help keep dust off 
sensitive video 
equipment and 
ihere is a deep 
brassed handled 
drawe' where 
you can 
securely lock 
away your 
video ea* 
settes Four 
gliding castors 
create total 
manoeuvre 
aMrty. 
A slunrwigfy 
attr*c»«v* uflrt it <* 
stunningly attractive price 
no* n Teak or Mahogany finish 

* Uwt -WKHi NWfflm Depth *30mm 
M»i Oerto ■MOmmttetfOr castor*! 840mm Vdw Umt 






Now you can house your total computer system, 
wdeo or h-fi m superb style wrih these three elegant 
and practical cabinets. No more clutter. Ho trailing 

wires. And better proteel ion for your valuable units. 

And although you might expect beautiful tunrutute 
of this quality to cost the earth, the price is only 
£39.95 each [plus £195 p + pj ^p 

FURNITURE THAT WILL r 
FM lANCE YOUR HOME 

Each ol these fine units is British made and freshed 
craftsmen in either a rich mahogany or stylish, teak 
look. Beautiful surfaces thai are 
heat resistant, scuff resistant 
And assembly couldn't be easier 
hi minutes you'R create classically 
stylish lumituie that will last for years. 

saveuptOjC790 
if you buy 2 or more units 

Oder more than one of ihese fine units and you 

need only pay a total of £3.95 for postage and packing 
If you buy all three you could save £7.90 Simply fill in 
the coupon and send today, 

THE MOBILE COMPUTER DESK 

Hardware, software, here's somewhere for it A. 
right at your fingertips. 

for your TV or monitor, a ngitt wide desk lop with 
room lor a telephone and modem beside it. 

Benealh it there's a large shelf for your keyboard. 
disli drives or cassette recorder. A surface thai 
smoothly slides away when you've finished computing 

Wrthm the body o! the desk another shelf stores 
your tapes, disks, joystic ks, books, manuals and 
magazines And rounding it off rucefy are lour smoothly 
running castors for easy moMrty 

DONT MISS THIS UNIQUE 
OPPORTUNITY 

To order simply fill in the coupon "• **™££^ m*m 
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Allow 28 days for delivery _„ *J?ZgZ»» M 

24 HOUR TELEPHONE ORDERING 

Credt Card holders can order simply by nngmg 
fit Leeds (0 &33 ) 7 76260 at any time day or night 
7 days a week. 



THE CLASSIC GUARANTEE 



ind i 'en iiTf reac 

'- - , - p . -r' --■■•' ' in vf 1 Mi 

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Classic Mail Order 



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-•iJ,-: (Mj 



THE STACKING HI-FI CABINET 

The luncbonal yet beautiful answer to a room 
swamped with wires 
andseoara' 
units 

Here's bow it all 
stacks up. 

A smooth, even 
surface for your 
tumtabie. Beneath itj 
behind an elegant 
smoked glass door, 
two deep shelves, 
one adjustable, for 
yourampfcher, tuner 
or cassette deck 

At the bene 

storage section 
with brassed dwiden 
to keep your 
collection in mint 
condition. 

Order your vnrf 
tnstyfcsh Teak or 
nch Mahogany finish 

tiw:.fttt*rt«n 900mm. CefficUtet Dwk - Wk» 700mm 
720mm Decth 415mm HefK [mc attest 510mm 







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Spectrum 48X at 
C&mmodote &t 
(Jotoolood) 



FtiH-cefotif bookies 
packed wttti cryptic 
dues to Help you 
TuntQYQl the mysiety 
and win the £25,000 , 
wword 



Z4H$fMQ#£ 



Musk and 
sound effects 
bum tit 



■ MS Adveniu r es ore linked — bus you con choose la piay them 
separately. Ami they ON nove REAL TIME buitt In So if you door I 
ta$t, you wind upasa pterodactyl s lunch, die of overexertion In a Roman 
orgy or jus? tose your mind 

■ ureko'' is not just on Epic not jusi on Adventure. At me stort or each 
historical era., you loco on Arcade Action real, to decide your strength level tor 
meAdwniurelocome 

■ The belief your score, the stronger and losler you'll be 

■ And it'll keep you on your *oes, wim wrafaoity-clionging. siqtic ana moving • 
graphics Bniiionirnusic and sound effects add loineexcuen 

■ As port 01 the ' Eureka 1 ' dock you receive a fun colour musfrated 
oooMei conioimng cryptic riddles and mysterious illustrations Using 
Dot* lei and screen fo0$ffwr you steadily unravel me clues ondbudd 
up o secret phone number piece ay p<ece 

■ it you're first to rmg n. you save the wort) and ooflect irw B28, ooo* 

■ Quile a package! Ana to give everyone a fair chance. "E urefcai* writ be 
re«osedsimuiioneousiywo/iaw»dcanOctoDfir31sf r984 No parts writ be 
availoue until lhai dote Al orders received by moil or phone by 26th 
OCTO BE R win dc despatched by post on the 3 1 S1 right across ihe world So 
order now and be one of ine first oft rhe mark 

fttfNJffiMCfJSOrV/ff 



DEVISED BY 

IAN LIVINGSTONE 




High qualify 

'M-catout, static ar 
moving graphics 



Just clip the coupon. Of, for even foster action, 
order by Credit Card on the 

ie 01-460 6000. 



The storylines tor ' Eureka'" r» by ton Livingstone, 
whose "Rgfttng Foniosy ' books haw sold over 
2, 000, 000 copies Hes or earned up some raiher 
nasty irtcks and twists lor you I n this Epic because 
he has also devised the cr ypftc clues ond 
conundrums m the booklet mat goes with me 
program Hes the one vmo knows the answers 



' E ureka! ' was programmed by 
Andromeda looms led by 
Hungonons Donor toss ond Andras 
Csaszar n look the equivalent oi 5 
YEARS lo create, and me skis of 
4 graph* artists ? musicians 
and a professor ol logic too 
We told mem to stroicn irvs 
tarawofe'scopobiin«s. and mate 
sure you were kept awoke tor hours'* 
They've dor- 





fM6r.OttMC0.MMNr Fan '"Won Mym» ¥*HM0 
To tu»W F*fEPOST DtfMOC, *wni Form NOd •nrvti M*r IHO 



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24 HOUR PHONE 

HOTLINE NUMBER 

01-4606000 

For C red it Card Of den 



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Donvjti Ho. J«Mun*!»f 9aad London SNA B*o *o «0JI4* |[nolo™j| 



|Th*iflefrf«lh*OSOOOsl«li«iaiOe(l95*qiiacH)ies«3l Dk Was 



*t GUNNER 

^ P as they swerve and sweep and have i few pot Uit thOSfi DlaneS before 



Thf object of Gunner is to stop The plants 
from passing over, towards their destination 
which is your local city. 

You may rotate the Run 360 degrees to scan 
for the enemy plane* which come screaming 
rewards you in 2 lt> perspective form. WJxn 
the> T are visible you must shoot them down 
with your pun sights which could he difficult; 



as they swerve and sweep and have 1 few pot 
shots at you as they go. 

l"n fortunately your guns can only with- 
stand three hits resulting in destruction or, if 
you let 10 planes pass, you arc retired From^ 
your position due 10 total 
destruction of your 
city. 



Hit those planes before 
their air-to-ground 

missiles hit you in Tim 
Humphries 
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VOUft COMPUTER, NOVEMfltft 1984 91 



YOU MAEVELLED AT BEACH-HEAD... 
NOW ACCESS PRESENT THEIR LATEST MASTERPIECE : 



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The most breathtaking 



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STATUS: READY 



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iodore64! 
Gripping arcade action 
ij| Multiple scrolling 



'ClOCIIV X 



! Soviets 
launch a nuclear 

a against major 
cities in the United 
States and Canada 
With our own 
nuclear arse 
dismantled, in 
accordance with the 
Salt IV Anns 
Agreement, the 

Soviets believe their treachery will lead to 
total world domination. Our only hope is our 
space station equipped with stee 
bombers, which can fly undetected in Soviet 
airspace. 

As squadron leader, you must fead your 
commandos on a virtual suicide mission, 
knock out the Soviet launch sites, and then 
proceed into the city of Moscow. Armed with only the 
weapons you can cany, you must seek and destroy the 
Soviet defence centre to stop the altacK ! Top multi- 
screen action ! 



AlMTUDt 
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piTTr 



CASSETTE* 
V 

MM 



W 1 



*lfc 




*ssf]g9B 



US- Gold )s Stocked by all leading 

computer stores including: 

BOOTS WH SMITH JOHN MENZIES 

WILDINGS WOOLWORTH 




Dealers! For information on how to become a U.S. Gold Stockist write to: CentreSoft. Unit 10, 
The Parkway Industrial Centre, Heneage Street. Birmingham B7 4LY. Telephone: 021-359 3020. Telex: 337268. 






H. Kaljouw 
gives your Vic 
a little lift 



Elevators is a game of skill written lot the 

unexpended Vic-2G. The elevators have run 
amok in a huge building. They have to be 
switched off but there is one problem, the 
main switch is on (he top floor of the building. 
The elevators arc useless so vol will have to 
use the stairs. 

So Jar it looks easy but there are a few 
problems. First of all you have (0 dodge the 
eight elevators, which is pretty tough in itself, 
and secondly you hive a time limit to cross 
each floor. If you get hit by an elevator or if 
you pas* the lime limit you are dead, and you 
have to start at ihe ground level again, At the 
start of the game ihe time limit is 15 seconds. 
If you manage to reach the top of the building 
the lime limit decreases by 2,5 seconds. You 
have ihrw lives. 

There is a bonus to be found, in the middle 
of each floor, except for the ground level. 
Each bonus is numbered from one 10 four, 
When you walk through a bonus, it is auto- 
matically replaced by another one which is 
worth a further 100 points. The highest bonus 
is worth 400 points. 

Each time you cross a floor safely, you auto- 
matically go to the next floor. You get 500 
points plus extra points depending on the 
time you have left. When you have crossed the 
top floor safely you get 4,000 points. Then 
you have to start at the ground level again. 
The time limit goes down by 2,5 seconds. 

Elevators uses machine code and 25 user- 
defined characters. To make ihe game fit in 
the unexpanded Vic 1 had to write it in three 
parts, and even then there was no space left to 
add Rem statements. 

Program I contains the data for ihe machine 
code and ihe user-defined characters. There 
are checksums for both. If you have typed in a 
wrong number the program will end with an 
error message. After program 1 is run it auto- 
matically loads and runs the second program. 

Program 2 gives you the title screen, 

instructions and the scorctablc. It also tells 

you which key to use — "V ■ left and **. M ■ 

right, After program 2 is run, it also auto- 

{continued on page 95) 



VIC 



Program 3. 




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(program 3 

continued on 

page 95) 



YOUR COMPUTER, NOVCMfl€R 19S4 33 




HIGH-SPEED 

COMPUTER TALK 

FROM PROTEK 

Intercomputer communication is easy in anyone's language, thanks to the Proiek Modem. Acoustic coupling provides 
a reliable link between the computer and the telephone tine. There are no connection charges, the unit is totally 
portable. The flexible fink between the mouth and ear-pieces ensures a reliable connection between most telephones. 

For C$9.95 







Interface Packs including software 
are available for the following 
computers:— 

• ZX Spectrum 48K U4.9S 

• BBC Model'B'Micro £14.95 

• CBM 64 £14.95 

• Or« Aunoi 48K £24.95 (tvallable September} 

• Electron £24.95 (available September) 
ftitwei fftdwft: 

• Two operating modes 1300/1200; 1200/75 

• Battery powered 

• Totally portable 

• LED Indicator 
• Compatible with any standard, 

RS 232 Interface 




British Telecom Approved 




Protek Computing Ltd, 1 A Young Square, 
Brucefield Industrial Park. Livingston, West Lothian. 0506 415353. 




(continued from page S3) 

mancally lewd? and run* rht next program. 

Program 1 is the msin program. The little 
man is control! ed by Basic, the elevators by 
machine code. At first the man is stationary. 
When you press " " he starts walking to the 

right. 

Once the nun has started walking, he 
cannot be stopped. The only way to protect 
him from being hit by an elevator ii by 
making him walk back by pressing the ",". 
This makes dodging elevators very hard. 
Program I also keeps a high score which is 
3,000 at the start. V 

The automatic Load Run in programs I and 
2 is done by following 

POKE 631> 131: POKE 196. 1: NEW 

This line is equivalent to holding down the 
Shin-key and then hitting the Run/Stop key. 
By putting this line at the end of a program it 
automatically Loads and Runs the next 
program on tape. So you should Save program 
2 immediately after program I and program 3 
immediately after program 2. 

Alter typing in programs 1 and 2 you have 
to Save them before Running them because 
they both and with a New statement and will 
destroy themselves. 



(program 3 continued from page 95} 

ees RETURN 

300 PS|HT-TT*M»«*ll«ll**i«M«MPMir 

304 FQKT-ITQ* 

30* PRINT-OHM It* M» • ■ ■ ■» 

see next 

91B PRINT -*■»»«■•■••■•■■•■•«•« »»*k. 

911 FmNTSC;THI<0>.HI-«- 

912 FWX-2T01SSTEP2 

913 IFX-lOTHEMWKt 

914 V*INT^I5PPMTJ'>«+2> 
916 F0RT-ITOV-I 

9 1 POKE 76S8+ T»22+X , 33 PTXE3040e+T«?2+ V 7 
920 P0fcE3637£, )33*T»7 

922 FOffP-jTOse t*Xt 

923 P0KE36876,e 

924 tCXTT 

92* P*7£*0*X+22*V 

92? T-3072C+P PCWET.7 PWIT+Z2.7 PWET+44.7 

928 T-RHIKX)*? IFTMTHEN932 

330 FOKEP 27 PCVEP+22 2S POKE^+4429 I5CTP'- 

932 PCKEP-Se PWEP+226 1 P0KEP*44 , 62 
?34 »CXT>: 

93* PQH003S. 44 POKES 120 4} 
937 Pt3KESt83?l PQKESe?©? 7 
930 F0RP-7e53T(Mt*3STEP22 P0KEP.36 T-6 IFP>00l33T«HT-7 

939 FtJKEP* 30720. T NEXT 

940 F0RV-3T013STEP6 

942 Ft»T-VT(J/*r 

943 FO(EE3?4W*22»i,6 

?44 POKE7«08+22»T-3e tOTT h> 

M< PORY*0Tn]9STEP6 

940 FOPT«VT0V+2 

?49 P0»CE^«42ft*£2*T,S 

93fl FWE'THJO+ZZ*! ?0 HEXT NEXT 

951 PWE9ie3,44 POr:EB104.44 

933 F0W*-r734Tp*964$TEp^ POKER, 3S POKER* M72» . 1 NEXT 
?68 RETURN 




1 RETT • ELEVRT0RS 1 • 

2 REH 

3 POKE 36879, 110 PR [MT-'^m mm — TT LEftSE MHIT.. 
10 P0KE96,27 PWE55.0 P0KE32,27 PWE31 ,0 S«0 
20 FCIRP-0TO249 

30 REHOD* Olf^LEFTfcrjt,]) D2f •RIOHTf <Df. 1 > 

40 di-rsc<di»? D2»nse<D2*> 

30 01-1)1-48 I FD1>37THEN0 1 «D 1-33 

60 G2»D2~48 1FD2>37THEHG2»D2~33 

70 Ga]6*Gl+G2 S-S+0 

SB POKES312+P,Q 

9ff NEXT 

S3 IFS023923THENFRINT'"DflTR ERROR IN 300-740" 

37 FORP-0TO31 1 P0KE716S+P , PEEK< 32768+P) : NEXT 

100 OQSUBi009 

400 PRINT'S" 

490 P0KE631, 131 POKE 198- rCLR: MEM 

499 END 

300 DRTR R2 RF.BD,DC.IEfC9,IBD0, 12 9D 
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PRTR 38. IE, H9, 21 -9E , 16-1E.CR,D0.E4,60 
PRTR fl2,80BD-38,lE,C9*3E,B!0, 1Z-9D 
PATH 42,lE,fl3,3D,9D,2C,lE,R9,3C,9D 



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1110 

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:.63,65.63.63<65 
126.129, 133- 183- 133- 133 189-129 
126.129, 189,141, 199,177-189 
t<6.t29, 189 141 189.141 189,129 
126, 129.173.173, 189, 141 , 141, 129 
0.24-24.233,24,36.8,24 
36,36.6fl.28.e.24-S.36 

- 233,60,60,24.233 
6P. 126-66,66.66.231 
24.20, IS- 24 
2^,28,60.36- 16> 24, J 6- 28 
- ^66,129,233,233,233 

133.13 ' 233 

9 129, 19! '33.126 " 

16 
16,9.4,4.4 4,^t |6 

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0. 126. 126, 102, 102, 126. 126,0 



310 

320 

338 PRTR R2,C6-BD 

340 DRTR- 2C,IE,N9 

330 
360 
370 



Program 2. 



16, t£,R9, 20,90,38, 1E,E8,E8,F2 
D0,E2,ft2,00,BD,4fl,lFC9.?E.D0 
12.9B.34.1F.R9,3D.9r'iE.IF.R9 
SS9 PflTR 3C-9P- 08- IF fl?- 20- 9D.4R.IF.E8 
620 DRTR E0.84,S0,E2,60 

630 DRTR R2. 13, fP 8C.JF.es. JB,D0,0F,R9 
3C9D.8C. IF. R9, 3D- 9D.R2- IF. R9 
3E9DF81F CR10E760 
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DRTR 3r.30.05.RV.B7.?ii.w.96.Cfl.I>i? 
PRTR ED.A2.00 B0>89> IP.C9, 1C 38,04 
DRTR C9 i 3C.30.03.fi9.07.9D,t?0,97,CR.Ii0.ED,60 
738 DRTR 20-00. IB. 20. 3D. IB, 20. 7E, IB. 20 
740 DRTR 9R1D.2» B6.1B-60 
S"0 FORRslTlrlft 

PERDX " S=S+>: F0FI"XTf?X+7 PERHV S»S+V WE I - V ♦ JF 
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1006 RETMFN 

1010 DRTR 7384.24,36.66129-?33.233,233.133 

92,153.193.187, 187,239,239,219,233 
748*. 233. 189, 129- 133.233,233. 126,0 
7403,233. 129. i;-". 129,239, 129.129-129 
7416.233.0,0.0,0,0.0.0 

I860 BRTfl 7432, 8. 8- S 38,8.8,8 



388 DRTR 
390 DRTR 
688 DRTR 



640 DRTR 
630 PRTR 
660 DRTR 
670 DRTR 
680 DRTR 
698 
rw 

7JS1 
720 



1080 
1082 
1884 

i6n 



1020 PRTR 

1038 DRTR 

1040 DRTR 

1030 DRTR 



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■fWtW KWfVI 4»OB- 



VOUR COMPUTER. NOVEMBER 1 9B4 95 



THE ADVENTURE EVENT OF THE YEAR BY 

JOHN SHERRY 

Cf)e prince 

WINNER OF THE 1984 CAMBRIDGE AWARD 




■ - ■■ 



Characters in orber of Appearance: 
JSaron ©rasper — a lanbotoner 

i Ambrose — a cleric 
^X fjorcus — a merchant 

Jfernan&o — a tipstaff 

©amp — a stall fjoltrer 








•■ft 




plus supporting cast = 

liillllfllii 1 



anti finally 

<Efje prince 






THE FIRST ROLE PLAYING GAME FOR FOUR PLAYERS 

Available for Spectrum 48K at £7.95 from larger branches of Boots or mail order from \ 
Cases Computer Simulations Ltd, 1 4 Langton Way, London SE3 7TL ^Jf 

Telephone 1 -858 0763 WJJ 





96 YOUH COMPUTER, NOVEMBER 1 984 




ORIC 

Go to work on an egg In 
P.H. Phoeng's cracking 
game for the Oric or 
Atmos computer. Go on 
and poke that yolk! 

Brood is written on an One- 1 46K 
computer. But as I have not used any bugged 
Basic commands nor any ROM calls, only a 
few changes need in be made for Atmos 
conversion. 

Just add one to the X-coordinate of the Plot 
commands in ihc following lines: 115, 270, 
275, 315, 380, 400, 640, MS, 650, 680, 685, 
695, 700, 705, 775, 2005, 2140. Also change 

FOB A =3 TO 34 
in line 690 into 

FOR A = 4 TO 35 

The main loop of ihe game is written in 
machine code - #9800-#9A50, entered 
with Basic — while the rest is written in Basic. 
The program uses approximately 7K of RAM 
memory. 

The game can be played with ihe keyboard 
of with a joystick attached to the right port of 
a Past Joystick interface. The player is also 
offered a choice in sound volume. 

The player finds himaclf on a grid in in 
incubator and the object is to destroy the 
Munztcr's eggs before they hatch. The brood- 
griddcrs, who protect the eggs, will make the 
job a bit harder. But while the player is able to 
leave the grid, these brood-griddcrs have (o 
stay on the grid. 

The player is equipped with the z-ray, a 
weapon that will freeze the brood-gridders but 

Oric Brood 

1,0 8a W*I,O.Oi*_«r»w 

'« "tTiooT2 a 2i** J «' , .aao 1 w 




at the same time speeds up — by 10 times — 
the hatching of the eggs. 

When all eggs are destroyed the player 
moves on to the next grid. There are nine 
different grids. There is a life bonus after 
every third finished grid while the speed level 
will be increased after every siith grid. 

If you want to practice on a particular grid, 
change the grid variable (GR) in line 655. 



Variables. 


GR 


grid number 


HI 


high score 


LE 


speed level 


LI 


lives 


R 


finished grids counter 


SC 


score 


T6.TJ 


time 


V 


: sound volume 




8 St***""*- 1 '*" 

L| ^H -.-L£V£L- •Aim 

1 --^-Bcose. 
YOUR COMPUTER. NOVEMBER 1984 97 




(continued from 
previous page) 

6*0 plot a. o. -score ooooo- 

643 PL0T26,0,-TJhTi* 

630 F»LQT13,0.Cl**M2t »0*» (3» ** E-RflV'KHtl IB) *0«* 14) 

635 9C-OiL WiLf-l iM-lilHl 

<»tvO cls.m>:«: t a. •!#■■* i 

665 PftlNTLI."' 'LE.' *BB,- •!♦] A 

67Q A-lMT<FtWO! |i*3»*20i]FA-2QTHENA-LB 

673 FQR**^TQ?3iPa»^a8B8C>+40-B,AiNElT 

660 PLOTO,0,4iPt.0T0. 24,liPLOT0,26,i 

663 F0R*-ZTOS7rPV0Tl,fl.Ti»«IT 

*90 FCMA-3 TOM i '•LOT A, 1. 36i PLOT A, 73. 38 1 NEXT 

*49 FQR*-7Ta33in.OT2,A,3»iPLOT3S,A,3aiHEXT 

TOO ■*.01fa, , ,*3| PLOT 33. 1.43 

703 PLDT2.Z1,43iPlOT33.23,43 

710 BMt»T(W*W«IO 

7lB PaOM,23liPOKtl.l67iC*U.B99A9 

7» P«E0,2S2tPr*Xl,lB7 

723 PWEZ.AiPWX^.IiCMAtVTOI 

730 PWEO,C*PT*K£l,D 

733 P«Ci;?,EiPl»,L3,FtCALL»99m 

7*0 RfB tow; 

743 F»ilV-0T0l0 t «A|>BtPC»CfA,»lW<T 
730 W 1EMO PA8E DATA 

730 DATA232,187,I,1.3* 

744 DATA27, 168,32,1,163 
T6S DATA39.1?1,32,71,1*3 
770 DAT*191,0,0,S3 

773 POKE l*,Bl PLOT Jl ,0,T* 

7W T-*VAL(T4> 

783 BOTOIOO 

BOO AE71 JOYSTICK DATA 

aoa nkc*4ao4,oinnoi«fao5,4 

■ 10 r4CEB960e,|73iPYJ»«»900A.l74 

813 PO*Et9BQC, I M t *>0tt gHQW ) » 24 

620 P0KCW«,1O3iPqK W »O r .3? 

823 FOZHItO, 170|POKE*9B14,I9I 

B30 PQKE*9B13,17A 

■33 r-DfcE4*JB3Q, 183. POKE 4*83*, 1*3 

B40 PWE««34 t lV0iri}KE**B4C,tm 

■43 00102200 

WW REH BUD DATA 

910 A-31jB-b7i[>>4iD-iBBiE-*iF-<-ia 

913 G-M7i I*- - lOOO'tRETURN 

920 A«31iB-62a£:--2SaiD-lf]7iE-3ir-30 

«8 B-lB3i T a- ~l £«»-,« TURt, 

930 A-l i a-fltC-2Oit>-!80iE-l ( F-8 

933 G-733iT*-'l300*(«ETWW 

440 A-3lB-l3lC>l3lD-]eaiE-3lF-13 

943 B-IBi i Ti-" JSOO' i RETURN 

97K> A-!2iB-36>C-253lD-l67lE-4lF-32 

933 G-I96i I*-- l30O"t RETURN 

960 A-6iB-32iC-3iD-168>C-8iF-32 

9*3 G-IB3i Ta-'lOOO'iREIURN 

970 A-T,B-33tC*233fD-187 I E-7,F-J3 

¥73 S> 173 1 Ti-t'IQOO'l RETURN 

960 A-2iB-l2iOl?i0-l6BiE-2iF-17 

9*3 S-213»T»-"I300*i RETURN 

W0 A-Bi»-32iC-733tD-IP7iE-3iF-S'a 

993 0-l99tTf-*10QO*< RETURN 

1O0O REM REDEFINE C H A AA CTEF-fi 

1B04 FGYtA-OTOlBifBTAMiHEXT 

1010 FOHA-4736BT047423 

LOIS HEA»|F«0KEA,B INKJET 

IOTO ftfn BFrOODyBRlOOER 

1023 DATft3B,4, 14.27. 62. 28. 10.49 

1030 REN PLAYER 

1053 0ATAB, 28. 42, 62,6.4,51 .21 

LO40 OATM. 14,71 ,31 ,*,8. 63.42 

1045 R£H GRID 

IOSO OATAO.O, 8,0.0,4,0,0 

1093 HErt EBB 

ID60 OATft63,5l.41,33,I3.31.i,3,*3 

lO*B REM EWK 

1070 DATA4,4.fl.8.4. 4, (J.H 

1673 REM HUMMER 

IOSO OATA9,|B,i0.3l,?l,l4.|O, 19 

IOB5 FOA*~463B4T04639 1 

I090 READS, F'OKEA.BiNE JIT 

1093 DATAO, 0,0, 21,42,0,0,0 

MOO AEH MC 

it os ra n * 110210*422 

IllO READMlB-WL <"■-+■*» 

1113 Pf*EA,8iN£iT 

1120 DAT* AD. 1,3.48, AD. 3. 3. 4B 

1123 DATA A9.C0,6D.3,3.A9,60 

(ISO DATA BD,F.3.AD,F.3,8D.0,4 

1133 DATA 66, 80, 3, 3, 68 ,30, F ,3. *0 

I 1 40 FQRA-*9800T0»9A3O 

1143 «AOM*.B-WlAi.C-*-»B*l 

I ISO Pq*EA,B l NEJT 

1133 DATA 2O,2,4,AE.B,2.AO.0.C0,64.D0 

I tit. DATA 7,£4,H,4C,J'».™.£A.ll,EO 

1143 DATA 3B,F0,2,B«,,r ,A6,F, A3, 4,**i,0 

L17D OAT* FO.B4.DO. 16. A?, , TO. 06.48 



1173 
I1BO 
I IBS 
11*0 
1193 
1200 
1203 
1210 
1213 
1220 
1223 
1230 
1733 
1240 
1243 
123" 
I23S 
1260 
13*3 
1270 
1273 
I2B0 
1283 
1290 
12*3 
I3O0 
l3os 
1310 
1313 
1320 
1323 
1330 
1333 
13*0 

1390 
1333 
1360 
1363 
1370 
1373 
13SO 
I3B3 
1390 
1393 
140Q 
1403 
14S0 
1413 

I42C 

1423 

1430 
1433 

.*•■•■■ 
1443 
I 430 
1433 

! |M 

14*3 
1470 
2000 
2O03 

NEXT 
2010 
2013 
2020 
2023 
2030 
2033 
2040 
2043 
203O 
3033 
20*0 
2063 
2070 
2073 



DATA Bl,0,C9»2*.DO,6,2O,E2,*«,4C 
DATA AD,9*J,E*.3,4C,B4.96,E0.9C 
DATA DO. 14,A2,O,2O,EJ,9B,8l,0,C9 
DATA 26,D0,4 l 2O,D6.4n,4C,AD,W 
DATA C4, 3. 4C, 84, 98, EC, AC, DO. 16 
DATA *2,0,2O.F3,98,Bl,O,C9,24 
DATA D0t*,70,EE,9*j,4C,A-),98 I C6 1 2 
OATA 4( .114.98. EO.BC, DO. C. A3, 0,70 
DATA EE, 90.81 , 0, C-* , 26.DO .4, 20,F3 
DATA 98, *C, AD, 98,4=6, 7, C9, 21, On. 1 
DATA 83,F,60,S3,4,C9,A3,B0,l[:,C4 
DATA I0,3*,E9,H1,«,4,A2,4,FE,81 
DATA B6,60.»I.BB,C9,3A.DO,9,A9 
DATA 30,9*l,a.l t PB,CA t 4C,9A,9H p A3 
DATA 12, 49. I,B5, 12. ¥1,V. A3. IO, DO 
DATA 3,BS,F,60,A3.I1,C9,I .D0.3C 
DATA A2 > 3,n,C7,BS 1 C9,30,DO,6,CA 
DATA D0.F*,*0,EA,EA,A2.2,4C,93 
DATA 99. 18, B3.0, 69 ,23, 93,0,90, 2 
DATA F*.I,60.3B 1 «3,0,E9,2B,93,0 
DATA B0,2,D6.1.60,F6.0,DO,2,FA. 1 
DATA 60,B3,0,DQ,7,P6,l,P*,O,*P 
DATA B4,1 1 ,A2,9,B5.4,BI,0,EO,3 
DATA DO. 17, A3, 3. Dfl, 3, Kl.il, 70, E2 
DATA 9H.A1,O.C9,22,90,3,D6,J,4C 
DATA 7D.99,20,D*,9S.A3.2,D3,2,BO 
DATA ll,2O,F3,9e,AL,O,C9,22,90,3 
DATA 06, 2, 4C.7D, 99.20.EE, 98, 83,3 
DATA C3.3.BO,il.70,D*,9a,Al,0,C9 
DATA 22,90.3,F6,3,4C,7D,99.20.Er 
DATA 9S,B3,2,C3,2,BO, I 1 ,20,EE,9B 
DATA A|,0,C9,22,9O,3,F6,2,4C,7& 
DATA 99,2O,F3,9«,AS.3,D3,3,B0,lA 
DATA 20.E2,9a,Al,0,G9,22.D0.6,20 
DATA EM,. 98. 4C. 86. 94, 06. 3. C3, 12 
DATA DO. 3, 83, F. 60, 93, 4, A9. 21 ,81 
DATA 0,E0,3,D0,3,A2,A.4C,2.99,A2 
DATA 3,OE,C8,PB,BO,CB,P*,C9,3F 
DATA D0 l 9,A9,39 i 9D,Ca,Sa,CA,4C 
DATA 93,99, *O,A2.*,A0. 20, A4.A3 
DATA "»| ,0,06,91, g,8B,F0,B,A9, 24 
DATA 91,0,B8,4C,AD,9*,CA,O0,],60 
DATA 18, A3, 00, 69, AO. 83, 0,90, 2, Kt> 
DATA l,4C,A8,9¥,A2,13,A9,A3,AO,0 
DATA 91 ,0,48,96. 18.*3,2,A8,A6,C4 
DATA 3.DO t F3.CA,D0.1.60,4B,A3,0 
RATA IB, 69,76, 63. 0,90, 7, E6, I ,68 
DATA 49,8l,4C,D3,94,A9,FC,B3,2 
DATA A*, 68,B3,3,A0,0,P1,7,C9, 13 
DATA D0,9.A3,4,A«..3.fl5,S,Bft.4.bO 
DATA C3, 4. DO. 4, A3, 3. 91, 2, «*, 2. DO 
DATA 2,EA,3,4C,4,9A,AO,0,B4,0,64 
DATA 2,84,3,A9,3,B3,I.A3.9C,C3.0 
DATA 0O 1 7,A3,9B,e3, I, DO, 1,60, Bl 
DATA Q,!a,*5,?,Ba,2,90,2,E*,3,E6 
DATA 0,DO,2,E*.l.4C.30,9A 
CLSiCM.L49A7« 
Pfl 1 M T " 0*OC«JH - , DESK 1 2 > 
FAlffTiFfUHT'FfKSB AMY >£»■ 
A*-* E 1T» I BE TA* I Q.9 
REM INBTRTJCTlCMB 
FtHA* L TQ2 1 PLOT I 2 ,A . CHR* 1 1 1 *CHA4 < I 



j •-■ m v n d-i 



PfllWTi PAlHTi AB tMT 1 F9TINT 

M*lMT'»r T,y,PIS*w^ '(Ml* 19*1* 1UrV 19B4- 

PAt*4T,PfttMT*Vou >■ Imldt *n incufcrtor In wnlch' 

PAlKfafffH o* tha lunttir arm ttorto m a* 

PAIHT'Qrttt.* 

F911HT-Y6ur tAAh km to dMtroy thitj *v4m" 

PAlKT'ba^ar* tlwy natch. - 

pfllwT'An ■•■v job 1# tiwt hadn't b*«n any* 

P«IN1 'brocd-gr] ddiri CWlng *tXwr you." 
Pfl|MT-Fvturi«t*lr thary t»" ngl immvm Xhm' 

PN]lfT<orid but thvy mrm abl* to ovt you* 

Pfr|NT>>ah*n you com* nur th. qrld,* 
PSlHT'At <pnw TIbs you t«n *f«i« I ha brciad'* 
PfllNTgr ldd>r4 Kith ynur i-fi». But «» thl*' 
FAlHT^Alaa apaam up *h* hAtchlfHj of th«" 
Pf>lHT 4 6*9a, yDu aAould not u*a thL* aMoon' 

2090 PAlHT'ton B4t*n.~ 

2093 PA|*jT*f* tlaaj rgot out tn* aoqa natch and* 

2100 PAlHT'th* young (unitiri Milk hill you Hi th" 

2IOS WWttnlr radiation.* 

21lO Pfi INT. PRINT 

2113 Pfi|MT<P*»IBS ANT KE¥*| 

2120 «->tr»tiDfr»l,Cl5 

7123 FBI NT' -Omci37)'8*0«ta<l34>l*, . . tlkfrt'B you* 
2130 FR) NT j Mil NT* "CHFnK 1371 " • "tJ** I 13*1 - . . . braodori 
2133 f91INT I PmNT* ~C*«t*U371- 'CHMllMI*. . . •Qfl- 
2140 PLOTS, 4. 163 
2143 FRlNfiFHlNT- 1 "CHFt* I 1 171 - " T1*TB I I3*t ■ , , , younq, 

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2133 F^INT-AOvErCNT CQHTAQL ■* 

21AO PBlNf-(ha Eur-aar-lraya, or a luymtlcfe IPABE" 
21*3 PfttNT*lnt«r-lac«, rigril pnrti 1 
21 70 PBINT-PRINT'QN/OFF fWITCH DF I-RAY l" 
7175 PWINT'apaca t>*r ca- lira button* 
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2183 rFTlNT- JDV8TICK CONTROL CTVM) 9* 
3190 DETABi 1FA4--Y-THENBOO 
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2213 JFV>«00BV>13THEH2210 
2230 8CTD6O0 



1 

II 
J 



se Youn comfvtch. NOvEMeefi 1934 



I'M fl TOSHIBA HX10 
I'VE GOT ALL THE 
BEST BITS FROM EYERY 
OTHER HOME COMPUTER. 
AND MORE . I HAVE A 
64K MEMORY, LIKE THE 
COMMODORE 64. fl 
CASSETTE INTERFACE, 
LIKE THE BBC. TWO 
JOYSTICK PORTS, LIKE 
THE COMMODORE 64 . 
A BUILT IN POWER 
SUPPLY, LIKE ThC 
ORIC ATMOS. 16 
USABLE COLOURS, LIKE 
THE ACORN ELECTRON 
73 FULL STROKE KEYS, 
LIKE THE B8C. fl 
CARTRIDGE SLOT LIKE 
THE COMMODORE 64. 
A PRINTER INTERFACE, 
LIKE THE ORIC ATMOS. 
SOUND OUTPUT THOUGH 
TVC TV, LIKE T*C 
SINCLAIR SPECTRUM. 
AN flUOIO/UIDEO 
OUTPUT CONNECTION, 
LIKE THE COMMODORE 64. 
RF BUILT IN LIKE 
THE BBC. AND. 
A SEPARATE 16K VIDEO 
MEMORY UNLIKE MOST 
NON-MSX COMPUTERS, 
32 SPRITES, MORE THAN 
ANY OTHER NON-MSX 
COMPUTER. AND I USE 
MICROSOFT EXTENDED 
BASIC, LIKE EVERY 
OTHER MSX COMPUTER." 



"WOW. NITH A 
SPECIFICATION LIST 
LIKE THAT. 
NO HOM)ER YOU'VE 
GOT fl 64K MEMORY." 




-#- 



fTf 





i -j 



You'd expect one of the best- selling 
home computers in Japan to have a 
specification list as big as its memory. 

But the Toshiba HXIO doesn't just 
limit Use if to that. 

it was developed along with other 
Japanese home computers to operate 



o n one language : MSX.Yo u ca n swap prog- 
rams, games, cassettes, even peripherals 
like disk drives, printers, and joysticks: 
they're all compatible with every other 
MSX computer. 

Ail of which makes MSX the system 
of the future. 



So if you want a computer that wont 
be obsolete in a few years, buy an MSX. 
If you want one of the best-selling MSX 
computers in Japan, buy aToshiba HXIO. 



TOSHIBA 



MSX 



_ 



FOR MORE INFORMATION OH THE TOiMiBA H*iO CONlACf TDSKhflA (UK) lTD. TOSHIBA HOUSE, FHIMLEY ROAD, FRIMLEV, SURREY <QUl6 6JJ T£L: <Q276j 681691 



Cosmic Cavern is a machine-code game tor 
the Commodore 64, incorporating smooth 
scrolling techniques with flicker-free display, 
and can be played with a joystick or from the 
keyboard. Shoot as many aliens as possible 
while avoiding crashing your spaceship into 
them or the walls of the cavern. Use a joystick 
to control your spaceship or: 

N for left, M to move right. 
Commodore Key lo move down. 
Control key to move up. 
Shift Kay to lire 

If you want (o fire continuously, press the 
Shift Lock key rather thin hold the fire butftn 



or Shift key down all the time. 

At regular intervals your Spaceship will 
accelerate by a factor of one, shown on the 
speed indicator. At the same time a square pul- 
sating anti-matter pod will appear in the cavern. 
If you shoot it the resultant shock wave slows 
down your Spaceship by a factor of one. 

However, in practice you may miss the pod 
and remain on speed level 2 which is more dif- 
ficult to steer through. Should you go past 
speed level 7, you will return to speed 1 and be 
awarded a massive 100,000 points, but if you 
reach speed level 4, fot example, you will see 
how difficult it is to steer down the cavern at 



such high speed. 

You arc warned of the acceleration of your 
spaceship by the rime indicator which counts 
down from right to left. The bullet indicator 
simply shows which of the seven torpedo 
barrels is to be fired next. The values of the 
various aliens are displayed on screen above the 
speed, bullet and time indicators. 

Inevitably you will crash your spaceship, ihe 
computer will take over, showing all seven 
Speed levels, and then itop. Press the lire 
button or space bar to return to the start, which 
will clear your scora unless you attained the 



CBM-64 



Patrick Edmond takes 
you on a trip into the 
awesome caverns of the 
cosmos. As your ship speeds up and the aliens 
grow more hostile, can you stay in control? 



2 



GOSUB 200 



4 POKES 328 0.. i PQKE33281 * 

6 PR INT" nwiT . xr-r (12) ; " -osn I C CfiVERN" 

3 PRINT :pRINT%NSTRUCTXONS : ";CHR*<14> 

10 PRINT"* HLOT YOUR SPACESHIP DOHN THE WINDING" 

12 PRINT" CAVERN USING A JOYSTICK <IN PORT 2> OR" 

14 PRINT" THE FOLLOWING KEYS : " 

16 PRINT"T0 / - LEFT - RIGHT* 

18 PRINT" — - DOWN CTRL - UP" 

20 PRINT" *>HIFT KEY TO FIRE, SHIFT L0CK=flUT0 FIRE" 

22 PRINT".* OHEN THE GAME COMMENCES YOU ARE IN THE" 

24 PRINT" ENTRANCE TO THE CAVERN -SO PRESS SPACE" 

26 PRINT" BAR OR FIRE BUTTON TO ENTER THE CHVERN" 

28 PRINT" ....SHOOT THE ALIENS TO INCREASE YOUR" 

39 PRINT" SCORE. *T REGULAR INTERVALS YOUR SHIP" 

32 PRINT" ACCELERATES AND YOU MUST SHOOT THE " 

34 PRINT" PULSATING ANTIMATTER POD WHICH APPEARS" 

36 PRINT" AND THE EXPLOSION FORCE WILL SLOW DOWN" 

38 PRINT" YOUR SHIP. IOWEVER -YOU CAN MISS IT AND" 

49 PRINT" CARRY ON RT THE HIGHER SPEED IF YOU" 

42 PRINT" WISH, 1PRESS A KEY TO CONTINUE" : POKE 133,0 

44 GETA$: IFA$=" H, THEN44 

46 PRINT'TV I HERE ARE THREE INSTRUMENTS WHICH WILL"! 

48 PRINT" RID YOUR JOURNEY DOWN THE CAVERN 

30 PRINT"* *>PEEDk ■ THIS INDICATES YOUR CURRENT" 

52 PRINTSPCW; "SPEED BY A MARKER ON A SCALE." 

34 PRINT"* lULLETk ! THIS INDICATES WHICH BARREL" 

56 PRINTSPCCI0>;"OP THE TORPEDO GUN IS READY" 

58 PRINTSPCO0); "FOR FIRING." 

63 PRINT"* I IMEk ■ THIS INDICATES WHEN THE SHIP IS" 
62 PR INTSPC<8>; "ABOUT TO ACCELERATE AND WHEN" 

64 PRINTSPC<8>;"RN ANTIMATTER POD WILL APPEAR" 
66 PRINTSPC<8>;"CB0TH EVENTS OCCUR" 

68 PRlNTSPCvS); "SIMULTANEOUSLY;-. " 

70 PRINT".*] IHE TIME READOUT IS THE MOST USEFUL OF" 
72 PRINT" THESE INSTRUMENTS." 
4 PRINT" -,F YOU REACH SPEED 7 AND ACCELERATE " 
AGAIN YOU WILL RETURN TO SPEED 1 AND" 
RECEIVE 100000 POINTS !" 
\F YOU CRASH, WAIT UNTIL THE SHIP STOPS" 
THEN PRESS SPflCE BAR OR FIRE BUTTON TO" 
RETURN TO THE START." 
IWTRESS A KEY TO START" POKE 198/0 
IFAS=""THEN88 




PRINT" 
PRINT" 
PRINT" 
PRINT" 
PRINT" 
PRINT" 
PRINT" 
OETAJ 



00 
82 
84 

86 
88 
90 
200 PRINT" mi 



SYS 13040 



ENTERING DATA, PLEASE WAIT" 



2B2 I* 16384 

204 RERDflf IFRt"**" 
206 L*RSC:LEFT*<fl«, 
288 IFL?9THEML=L-7 
210 R*R5C<P|rJHTf (ft* 
212 IFR>9THEWP=R-7 
214 P0KEI,16*L+R 1*1+1 
300 DRTRR9,3F .SD.ll-DC, 
?02 DRTR18,D8,R3,F4,F0, 
384 BRTR10, 10,R9,11,8D, 
386 DflTfi0S,E3>FF,0ft J 0fl,, 
308 DfiTRDe,03,R9,00,3P, 
310 DflTH12,D0,18,C?.B0> 
312 DflTRlF,8D,ll,D0,RS", 
314 DfiTRD0,R9,00,8D>8E. 
316 DfiTR85,Fl,SS,F0,05, 
318 DRTRD0, 03, 4C, 79,43, 
320 DflTRRE,&lr, 02, 88,29, 
322 DRTR8R.29.02.85.Ffi. 
324 DRTR83,EF,RD,08.DC. 
326 DRTR10,05,F1,85F1, 
328 DRTR27,F0,07,RD,80, 
338 DflTRD8.0E,RD,08,D0, 
332 DRTR8D, 00,50,00,03, 



THENRETURN 
l>>-48 

, l>>-48 



BQT02W 
H? 18, 8D 
19. C» 
84, EW 
ftR.85.F3 

04 , n-i , rd 

SD,F8,R9 
18, 8D,: 
02,R9i 
EF ■ R5*F< 
20,9F,FF 
01,85,F1 
88,29,04 
23, 10.49 
fi5.C5.C9 
DC. 29, 84 
38-E5.FF 
CE > 10.08 



100 YOUft COMPUTER. NOVEMBER 1984 




high score, and press fire button or spacebar 
again ici commence journey into the cavern. 

Cosmic Cavern can be typed in exactly as 
shown and Saved. However, if you own an 
assembler, type in lines 4 to 90 and add: 
2C = C + 1:IFC-1THEN LOAD"". 1,1 
and Save on cassette. Next enter the hex code 
of lines WO to 904 directly into memory with 
your assembler beginning at 4000 hex, and 
Saw 4000 lo 4980 he* on cassette after the 
shiuieiicd Basic program juit mentioned. 
Typing Cosmic Cavern in this way avoids the 
delay associated wiih the subrauiine at linc'200 
{continued on page t83) 



COSMIC 





334 
336 

338 

3*e 

342 
344 
346 
34 « 
330 
332 
354 
356 
358 
360 
362 
364 
366 
363 
370 
372 
574 
376 
sTS 
530 



DflTflR3C3, 

DRTflIie,29, 

DRTR18,65, 

DRTREE, 10.' 

DRTRF0. 11 

rflTRTJC,29, 

DH7RCE,01> 

DRTRF0,H, 

DRTRDC29, 

DRTREE,01, 

DRTR0S,85, 

DRTR60,41, 

ERTH83.FB, 

DftTR01,D8, 

DRTR9D,02, 

DRTflFCFfB, 

DflTRiepPi, 

DHTR07,98, 

DflTRH3,34, 

DRTR4R,4R, 

DRTR02,D6, 

Pfl7RF0,0B. 

BRTRE0, 90, 

0RTfl3S,E9> 



C9,24.F8, 

0B, D0,8E « 

FF,SD,00. 

D0,RD.01. 

R5,EF.DB. 

01,00,06, 

D0iflO.01, 

fl5.F0,p0, 

02,00,06, 

D0,C6,FR, 

Ffl,R5,Fl, 

C6,FB,10, 

R3, FB, R8, 

90,03.00, 

D0,R9,01, 

4f ,FF,20, 

RD, 10,00, 

00,10 -IifJ 

93,E1,RB, 

' ; :8,E9,02, 

EI.RD, 10, 

BS,E0,18, 

02>F6,El, 

32,29>F8, 



07 RD,80 
RD-00 00 

DC , '.-fii . B •■ 

00^9.36 
07,HD,00 
IE, 01,00 
1)0,09,94 
07,RD.00 
EE,O1,B0 
10j08,R9 
D0,03.4C 
04,R9,06 

RD » 00 i D» 
0R-88, 10 

1O,D0,8I> 

29..01,F8 
80, 10,09 
00,D0,4R 
95,E0,B0 
20-29,01 
69,20,93 
RO.01,00 
R8, 18,73 



332 
384 
336 
388 

3Se 

332 

394 

393 

402 
404 
406 

488 

410 
412 
414 

416 
A 1 -J 
420 
422 
424 



DRTRE0, 
DRTR0R, 
0RTR73, 
DRTRR3. 
DRTR10, 
DflTfl83, 
DAT RBI , 

data 

IIRTRIS, 
D8TRR8, 
DRTR95. 
DRTR69, 
DRTRE8, 
BRTRF&, 
DRTR8D, 
DHTA8D, 
DRTR09, 
0RTRF9. 
DRTRS3, 
DRTR04, 
DRTR28, 
i'HtH4.>. 



95-E0.90, 
13,0fi,90, 
E0.93-E0, 
FRH2,06, 
Ffl,R2.00, 
F3,B3.E0, 
F8, F8, 03, 
B1,F8,D0, 
69, OS, 90, 
?0,0fl,R9, 
t 1 4C, R8, 
28,93,E0, 
ES,E0,0E, 
1E,R3,K1, 
0B,D4,4C, 
8E,D4,R3, 
20, 8D, 08, 
R3,FE,33, 
.',03. 
8I'.FF,41. 
BD*FE,41 ■ 
BO -04,42, 



02, F6 
02, F6 
9802 
90,28 
B3,E1 
83, FS 
4C37 
F7,BD 
03,t»0 
00 90 
1KE3 
99,02 
00, BE 
00,08 
C3,4l 
FS,4R 
04, B? 
E3,FF 
4C1F 
9D . 92 
R9,0O 

PS . oe 



,E1,9S 
,EI, 18 
-F6,E1 
» 08, Cfl 
. F0, 38 

,R0,00 

,43,R0 

,03,00 

,18,t9 

, 03, 00 

,E0, 18 

,F6,E1 

.R5.F4 

,R9 

,R9,21 

,4fl,4H 

.00,85 

,29,07 

,43,R9 

,42,R9 

,80.01 

,80 03 



OHTR42,R0, 

riHTR9O,30.- 

DRTRF4,88. 

PRTRZ0. ^'F. 

DRTRi'8 . 80 . 

DRTR06 . EE , 

0RTRFE,4t, 

ORTR90,03, 

DflTRflii LB 

pHWB,C9. 

OHTRV'i 

0H1HH:>,titV- 

BRTflie,f-R 

DflTR06 9», 

BRTR66.06, 

PR rf(2« 

0RTRR3,FD. 

PHI-*!'-! 



• 



OH I 
OH I 
ORIH^ ■■' li 

ORTR 

BRT«* >r 
0RTH9B 53 , 
OR"' 

PRTRiif ,00. 

DRTRCR-J' 
0RTRKP4O, 

DRTRII0.17, 

ORTR0R.0R, 

DRTR29,FE, 

PRTRI«,CE, 

nRTR7F,80, 

riRTRD0.RO, 

ORTRD0,65, 

PRTR04.R0.. 

DRTRF5.20, 

DRTRlig.OT, 

PRTR99,D0, 

PflTR02,Ee, 

DRTHO0.0R. 

DRTREl .4: 

DRTRR9iO0, 

0RTRD4,fl9, 

DflTRSD, 12, 

DRTRH3,80, 

DRTRH2,80, 

EfRTRl0,10, 

DRTR08,33, 

PRTRC0,y0, 

DRTR00,00, 

DRTfl00,00, 

DRTR00 , 00 - 

DRTR00 . 00 , 

BRTR00,00, 

PRTR01r00, 

ORTR00,92, 
PRTR00,08, 
DRTR01,00, 
DRTR00,02, 
DRTR00.80, 
DRTR00,00, 
PRTR00.00, 
PRTR00>08, 



504 
588 

see 

310 
312 
51<* 
316 
318 
520 
522 
524 
326 
328 
330 
332 
334 
336 
333 
340 
542 
344 
546 
348 
330 
332 
334 
336 



0F,R2,27. 
06-90 70- 
F0,2fJ,C0. 
43, RD, 01 > 
01,42.80, 

18,6'- 

EE,FF.4l, 

04,29,01, 

t9.F0.0B. 

R3.F? 

" ■ ^D , 
R6,F0,R9, 
39,06,90. 
GR,30,0B, 

K3,R! 

0H . E » 

9?-38,86. 
»31. 
Fli,6? 0iS- 
Oft, R- 
FF,E0,08, 
^BO, 
09, ft:- 

| . 
44 , 80 ■ 22 , 
RT-.Fp-l!? 
30,00.08, 
90 , 02 . 03 . 
Z3,D0,ft$, 
1 1 .. DC, R9 , 
19,00,09. 
R8,68,RR 
C0, 33-00- 
, ,[ -4^-4r, 

FE.8P, II, 
0B,R3,FF, 
FF,4C36, 
R3-00-9D. 
R8 t 4i,29, 
91 ,F3,R9, 
03,80, 14, 
D4,R90F. 
8D,12.P4, 
CH,08,FD, 
00-3C-F8, 
38,00. 3F, 
93 , 90 00 - 
00,00,00, 
80.80,00, 
00,00,00, 

000000, 

00,00.08, 

00,02,00, 

80,00,01, 

01 00.00, 
00, 02,00, 
08,00,01, 
00,00,00, 
00,03,00. 
00 , 00 . 00 • 
00,00.00, 



ED .58,06 
DRCR-10 
06, 00 . 0? 
42.18.69 
m* 42, 98 
05 #43 
80 . FE - 4 1 

5-.41 
F0,(?B.R5 
E6,FB,4C 

6,FT3 

•i.CM 
00, 90. 53 
63,86, 9B 
RD, IB, 04 
i.R. 10.13 
HR.HC1B 
• 

J , IF 
L8,65,F0 

4,F0 

,,, 

RH.fl9.09 

•.- i 9 
9n.R3,07 
FF,R6,FK 
U0, H' 
69-0R.0R 
RD, 10.00 
81, 3D. 10 
11,08,29 
R8,8D, 12 
81,80, 19 
68,48, R2 
FD,Cfl, W 
OE 42.R9 

p ,D0 
?,8D 
0: 00,95 
EF,85,F7 
03,80,13 
D4,fl9,31 
80,18,04 
4C,RS,4I 
4C01 41 
08.33,38 

Fe.se^ef 

0j.00.00 
00,00.00 
00,80,00 
00,08,00 

00 00,00 
00.00.00 
00.01 -80 
00.00.02 
02 ■ 00 , 08 
08.01,00 
00.00,80 
00,00,08 
00 , 00 , 00 
00.00,00 
00 . 00 . 00 



(listing continued on page 103) 



YOUH COMPUTER NOVFMBFR T9B4 101 










You are commanding a squadron of lour 
ground attack aircraft... 

The mission is seemingly hopeless. 

Fly along the river at zero altitude, twisting and 
turning crazily to stay within its tortuous banks, 
blasting at anything and everything in sight. Especially 
the bridges. 

Three of your jets are held in reserve while you 
are pitched against Battleships, Enemy Aircraft, Land 
Tanks, Balloons, Helicopter Gunships. All intent only on 
your destruction, 

And destroy you they will, if you don't get them 
first. You'll need to keep an eye on your fuel gauge. 
But take comfort, you can take fuel on board from 
one of the special depots 



If you get hit -and nobody has yet reached the 
end of the river- your next reserve starts at the last 
bridge you blasted on your way through! 

Each target you destroy adds to your points 
score. 

Like all Activision Software, River Raid will hold 
you and keep you coming back for more. 

Chocks away! 

lose y ourself in the world of 

3cWisioN 






(continued from P*00 '0'J 
cvcrv time you play the same, bui if you don't 
own an assembler I'm afraid that every lime 
you load Connie Cavern you will have lo 
endure this delay white the Bask subroutine 
tnier* the data into memory. Please check 
carefully that the hex code his been entered 
correctly before running. 

The heart of the program is an interrupt | 
routine located at -1000 hex to 4380. In Cosmic 
Cavern ai! interrupt sources, such as the timet 
chip*, Jfc Juahlcd except for the raster utter- 
rupt The raster scan is controlled by the '64 
transfers the screen memory on to the tele,, 
vision from top to bottom every 1 /60th of a 
second, arid the process takes about I /60th of 
i second. 

The raster position cam be found in locations 
DO 1 1 and D0 12 hex, and in Cosmic Cavern a 
latch is set so that an interrupt request is 



generated when the raster scan is about half 
way down the screen. This is explained in the 
programmer's reference guide. When this 
interrupi occurs the routine at 4000 hex 
commences, the '64 is set into 25 row mode so 
that the score and instruments ate held 
siiiuonary, the spaceship is moved according to 
joystick or keyboard and any bullets arc moved 
down ihe screen. 

Finally, the cavern i* shifted up the screen by 
one bit - since smooth scrolling is involved 
the cavern i* only moved a fraction of a whole 
character up the screen - multiplied by ihe 
spaceship speed, and the scroll position i> 
updated in register DO 11 hex. If this move- 
ment exceeds seven bits the screen memory is 
shifted up one whole character and the cavern 
wall blocks and starts ate added on to the 
bottom or the existing cavern . By now the 
raster has completed a scan, so return to 1 he top 



of the screen; the 64 is set in 24-row mode to 
that the smooth scrolt position, lower three bits 
of DO 11 hen, takes effect and completes ihe 
interrupt. 

Speed, bullet and time 

The program running under this interrupt 
is. responsible for the speed bullet and lime 
instruments and also waits for the spaceship to 
collide with an alien or cavern walls - sprite in 
background collision detector DO IF hex — it 
a collison docs occur this program takes over 
control or the spaceship producing the crtah 
effect and then resets for anolhcr game. 

A cassette is available containing two copies 
of Cosmic Cavern for £3.00 including postage 
and packing, 

Send a cheque or postal order to Patrick 
Edmond, "Le Nid", Scarborough Road 
Driffield, East York*, YQ25 7EQ. ■ 



(listtng cantinuea from page 101) 

538 D8TR00 , 00 - 00, 00 09 99- 03, 09 

560 PR7800,09.00,39.00, 00. 09 ,O0 

562 081801,09,00,00,00,00,00,00 
364 DflT800.0e.se, 00, 00, 09, 00, 00 
566 081800,00.00,90,00,00,00,30 

563 DAT860 . 00 , 00 . 00, 09 . 99 , 00 , get 
370 DRTR90,?0.00,0e,0e-00,00.00 

572 pRrfl09,97.e6.03,03,0i ep.02 

5^4 DRTflftfl.RR J BE.BE,BE,BE J flR,Rfl 
576 Dfl T R00.00,00,00,00,00,0e,00 

573 DRTRFF.FF,FF,RR,fF,FF,FF.RR 

580 PftTflFF.FF,B7,P707,D7,FF,FF 

392 PHTRFF 55 , FF , 35 - FF . 55 . FF , 55 

504 DRTB00, 00,00,00,00,00,00,00 

586 P8TR90. 00 90.90.09,00,09,00 
583 ORT800, 00. 00, 00. 00,00.00,00 
530 PflTRl3,3C,7E.C3,C3,?e,66,E? 
592 0RTR18,3C,18,?£, 18,FF,18,FF 
594 PflTR13,lB,.3t ( 7E ( 5H,7E,DB,0B 
596 PRTR7E,FF,PB,0B,PE,DB,FF,7E 
598 BRTRC3,EB,0B,BB,7E,3C,7E,PB 
600 B8T899, 10.3S,7C,FE,7C,38,10 
602 BRTR3C,FF,pB,FF,7E,3C,ee,09 
684 IfRTR09, ?C, FE, C6, C6.FZ, C6, C6 
606 DRr800,FCFE,C6,FE,C6,FE,FC 
69S D8T800, 7C,FE,C0,C0,C9,FE,7r 
610 IfVT80e,Fr;.FE,!:6,C6,CG,FE,F 
612 D8TR00.FC FEC9,F0,C6,FE,Fi 
614 D8TR00,FC,FE,C0,F0,C0,C0.Cb 
616 D8TR90 , 7Q , FE , C0, C0 , C6 , F£ , 7F 
618 r8T809,C6C6-C6.FE^6 C6-C6 
629 PRi80?,3C-FE ig.i8,13.FE-3t 
622 PRTH90, 00, 00,00.00,^6 65, 0f 
624 DRT800, C9 • C6 Ci: , FS - CC . C6 . O 
626 DRTR00,C9,C0,C0,r;0.C0,FE Fr 
628 PRTR00,C6,eE,FE,ri6,r; 6 ,r:6,C6 

639 tiRT800.C6.E6,F6,De,CEC6,C6 
6^2 PRT890.7C,FE,C6.C*-C6.FE,7C 
634 DRT890 > 7C , FE . C6 ■ FE - Fr - C0 , C0 
636 P8TR00 . 7r FE . CS C6 - CC FE 
638 P8TR09 , 7C . F£ , C6 , FE , FC , Q£ . r$ 

640 DflT800,7C'FE,C0-7C,06.FE 7C 

642 P8TR00,7C'FE< 18- 13, 13,18, IS 
644 PfiTR00,C6,CG,C6,€6,C6-FE,7f: 

646 pRTflee-CG-c^.^-ce'Sc^c-aa 

643 P8TR00,r^,r;e,Ii^;,p t - t FE,FE^?C 
650 TJRTRFr . C9, FO0P,FF ■ 0€ ■ 0'. 
652 PRTfl00.C6,C6 J -E6>7£ J 06,FE.7C 
654 PRTR30.60,-C0>83,C3,DB>DB,FF 
656 FRTR99, 7C FE , C6 > C6, C6, FE , ?C 
658 ORT890. 13,38, 10. S3, 18-18,3G 
660 P8T890,7C,FE,e6-0C*30,FE,7C 
662 DRT800,7C FE-06- IE,96,FE7' 
664 P8T800,60,6O,6C7E,0C,0C 
666 D8TR90 - 7C - FE , C0 - FC ■ > 06 FE , ?C 
668 &8TR00,7C.FE,C0,FC-C6/FE,7C 
679 rRTR00,7C,FE.0CeC'18, 18, 18 
672 DRTR00, 7C,FE> C6, Ft, C6-FE, 7r 

674DRTR09 , 7C ■ FE , C6 FE ■ 06 - FE ■ 7C 



676 P8TR11, 00, 33, 32- 00, 12-08,34 
678 PRTR32,00, 13,00.35,32,00, 14 
680 P8TR90 - 36 32 . 99 . 1 5 , 00, 37 , 32 
682 PRT890, 16,00,38,32,09,17,09 
684 PRTR39,32.09-09,09,00.33,32 
686 DRTR2R27, 1C lC.lB00,0C,0r 
688 PRTR0C,0C-0C,0C-0C,00.09, J^ 
690 BRTR2C,23,23, lC,2B,ee,0C,0r 
69Z PRTR0C,0C,0C,0C*eC,00,00,2F 
694 pRTR20,24,lC,e«J-0C,t«:,0C,eC 
636 D8T830, 26, 2C, 29, 90,28,18, 26 
698 BRTR29,1C,00,32,32,32,32,32 
709 PRTR32,32.32,00,00,1F,20, IE 
702 PRTfllF,00,2ft, 18-26,29, 1C. 99 
704 BRTR32,32,32,32,32,32,32,32 
706 PRTR00, 00, 00, 00, 18,26,28.24 

708 P8TR20,18.00, 18, 13.2D.1C-23 
718 DRTR25,00, 19,30,90,27, 18, 2B 
712 P8TR2?.20-1R,22,00, 10, 16,24 
714 PRTR2625 lB,09-00,00,09,90 
716 PRTfl78,R3>40,8D. 13,03, 89.. 09 
718 rRTR8n>14,03.8P,28.B0,8B.2l 

729 CflTRD9,R9,43,8D, 13,03, R9. IE 
722 DRTR8P. 19,93, R3, 00,9b, 0€,pp 
724 BRTR8D,0E,rC,8D,li,Li9,fl2,99 
726 BRTRR9 , 00, 3D, 90 , 04 , 99* 99, 05 
728 PRTR9B. 90,06,95,00,07,90,00 

730 PRTRB8,9r,90,P9,9P,00,pR,9D 
732 B8TA00-BB,E8,D0,E5.89,00,9P 
734 P8TR90,P0,Ee,E9- 11,P0,F8,R2 
736 DRTR06,R?.2l.9]3,F?,07,Cft. 10 
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KERPV. 



YOUR COMPUTEB, NOVEMMW tSS* 1 03 



& 



WOW! THIS 

COMMODORE 16 

STARTER PACK'S 

WIZARD! 





And 



First we jolly well put everything you need to 
start home ci imputing into one box. 

Then we placed an ohligingly low price on it all 
under £140 for a computer, cassette unit, a super 
programming course and 4 great games programs. 

Boys and girls (of all ages) will just love the 
Commodore 16 Starter Pack! 

The computer has a 16K memory, real type- 




writer keyboard, 121 colours JFiind also superb 
sound and graphics. 

It uses BASIC (this is the language in which 
you and the computer"talk"to each other, right-ho?! 

The BASIC used by the Commodore 16 is very 
advanced, yet really simple to use. This is because 
it gives you more programming commands. 

But just in case any of you fellows do have any 



AUGERS AftGOS ASOA BOOTS BRITISH HOME SPORES CAflREfOUR CLYDESDALE COMET CO-OP CURRYS DWONS GRANADA GREENS IASKYS JOHN LEWi 





1:1 

y 



QMS 



t's only £139.99 

difficulties, we also provide you with a Help t0^ key. four jolly good and splendidly challenging 



difficulties, we also pmvide you with a Help tr key* 
This helps to son out programming errors by 

showing you exactly where you went wrong. 

So you can get more out of your Commodore 

16, the Starter Pack also includes "Introduction 

to BASIC" a guide to programming that any silly 

chump can follow. 

And so you can get more enjoyment, there are 



WKttCJ MW/llS UUMBHOWS SAVftCtNIRE SPECIftUM SUPREME IE&C0 WUIACE HjATON WHSMilH WOQWOMH AND MAJK3MAL NETWORK Of COMMODORE DEALERS 



four jolly good and splendidly challenging 
games: X-Zap, Punchy, Picture Builder and Chess. 

If you are thinking of starting home 
computing, there has never been a better time 
than now, with the Commodore 16 Starter Pack. 

No matter what age you are, old thing, 

^K commodore 





Zoom is w easy w use machine-code aridity 
and allows ihe user io enlarge to full screen size 
the area of the screen enclosed within a 
window. This window can be varied in tixe 
from 8-256 pixels wide and from 3-192 piscK 
high. When in Magnify mode the magnified 
area can be viewed continuously as the window 
is moved. Since ihe magnified area can also 
itself be magnified, using the same window, 
infinite magnification is possible, even if of 
doubtful use. The routine does not magnify the 
colour but produces ihe magniftcalion in the 
current permanent attribute colour. 

The routine accesses various Basic variables 
for m parameters. This means you do not have 
(O bother Poking any numbers, but just use a 
Let statement. If you call the routine without 
having assigned the following variables a "2 
Variable not found" error will be given. 

The machine code has comprehensive error 
checking. Zoom will not allow XPOS or YFOS 
to be values that make a part of the window orT 
screen. If say, XPOS was 270, an illegal screen 
co-ordinate, Zoom would give XPOS a new 
value thai ensured thai the window was entirely 
on the screen, this value would vary with the 
size of me window. The width of the window 
Can have values between and 5, the depth can 
have values between and <6. If ihe variables 
Width or Depth have values that are too big 
Zoom will change the value to the maximum 
permissible value Likewise if either has a 
negative value Zoom will replace the value with 
0. The width and dcpih numbers correspond to 
ihe following window sizes: 
Width depth 

258 Pixels 192 Pixels 

1 128 96 

2 64 48 

3 32 24 

4 16 12 

5 6 6 
8 - 3 

Thus to have a window size 64 pixels by 1 2 
pixels, Width would be 2 and depth would be 
4. tf you wish to see an example of Zoom error 
correcting, load up with the Zoom code and 
then run the following lines of Basic. 

10 LET XPOS- 260: LET YPO$- - 10 
20 LET WIDTH = 6: LET DEPTH = - 5 

Having run the program type 
RAND USR 50000 

This will draw the Zoom window. In this 
case you will sec a very tall, thin window, tf 
you now type Print XPOS, YFOS, Widih, 
Depth you will find that Width -5, Depth -0, 
XPOS- 248 and YPOS- 192. Since XPOS and 
YPOS denote the top left corner of the 
window, YPOS has been made 192 since the 
window is 192 pixels high i.e., this is the first 
value of YPOS above -10 that allows the 
window to appear/sit on the screen. XPOS has 
been rounded down until the window is on the 
screen, in this case 2 W- window width. 

The algorithm used for Zoom taxes each line 
of the window, places it in a buflci and Keeps 
on doubling it in width until it is 32 bytes wide 
It then puts the 32-byte bufier down on the 
screen — I92f(windc*w y size) — times. The 
initial form of the screen is saved at 32768 and 
the magnified image is formed on the normal 
screen Ie, t at 16384. To create Zoom, type in 
program A and then save it. Now try running 
it, if you have no errors, then save the code. 
The code can be used independently of 
program B, this program is provided to help 
you use Zoom. 



106 VOUH COMPUTER, NOVfMSEfl 1984 




Basic program commands. 


A ... 


Clear main screen and back-up. 


B ... 


Move back-up screen down to 




current window screen 


L ... 


Load with new oack-up screen 


m ... 


Magnify area under window until 




next Key press. 


M ... 


Continuously magnify. View can 




be moved around using normal 




direction keys. 


N 


Re I neve back-op screen. 


P ... 


Make magnified image current 




window screen. 


s ... 


Alter window movement step size. 


x ... 


Increase window width. 


X ... 


Decrease window width. 


y ... 


Increase window depth. 


Y ... 


Decrease wtndow height 


Machine-code routines. 


Address 


30000 


XOB cur rem window onto 




screen. Doing this twice will 




delete the window 


30003 


Move screen from 32788 to 




18384 



Move screen from 16384 to 

32768 

Move screen from 39680 to 

16384 

Move screen from 16384 to 

39680 

Magnify area under window 
The area 50708 50800 is used as work- 
space by Zoom and should be left dear. 
32768-39679 Used to store screen during 

magnification 
3968046591 Used to store back-up screen 



30027 



30039 



Program A 
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51.25 LET c »0 

NEXT h 
31*0 PRINT 'Ho ettt 

5150 PflEMT 'Si,* t&Hdt iTOi iOHtrt 
"50000 I ft 700 bytes." 



Program 8. Demonstrates how little external 
control the machmo code needs 

9 LET tiid'.Kzl L£T «5*,hi: 
10 LET xPOiilOO LET JC05- 
25 LET isl 
30 LET ISdiB 

■40 LIST 1500 re« »V, iOitimn 
9 en the it re en 
tOO GO SUB 1500 

.10 IF INKEY1**" THEN 00 TO 110 
115 IF HOT 194 THEM SflND0MI2t 
3R 50000 

:i0 co sue 1000 

140 00 TO 100 

500 REM *-..--.-----.tt«t** 

LET to I ■•ipe.i4¥PO* 



1020 IF 
RN 

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110,2 REM Use tr.t Of oth* 

IKCSe tttd H'!r. 

1103 REM • -?•***♦*>+* 

no* REM Mitfoanse vimen 



508* 7 



Mark Jones takes you up, 

up and away . . . with his 

instant enlarger for the 

bleary-eyed Spectrum. 



Variables. 
XPOS 



YPOS 



wroTH„„ 

DEPTH 



X co-ordinate of 

window 

V co-ordinate or 

window 

Width of window 0-5 

Depth of window 0-0 



th 

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crtefi to be l:»j(j 1 if if fit 

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1107 PffK Tape 'Jl f I i on 

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in ntue ? i| if a * , :, -~t *. 1 1 " 

THEK LOflO -OCE 33600) RPN^OKI 

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sn, ";if. JF •*■ 
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1090 PE ••--■»*<■-»♦.-»--» 

£000 CLEflF L-3AD ""CODE 




TfOOR COMPUTEP, NOVFMBEfl 1984 10? 




ALL HANDS ON DISK. NOW 



ENCOUNTER/TDMBN t )F KARNAK 

i jdvi'iittirt' k;.mii V 



CHULKl' 



WD PRO 



HOME BUDGET 




EINSTEIN SlMPl 
(VATca*haccouni 



ZEN 



PHE CRACKER 
|sprw.-jnjKhcctl 



I )H MUMMY- 




Einstein from TATUNG. Sheer genius from around 
£499. The complete colour micro with no hidden 
extras. And with no hidden software, unlike some other 
new computers. 

Right now you can get your hands on both Einsoft 
and Einsoft Approved Software. An immediately 
available range that's every hit as versatile as Einstein 
itself. "Einsoft" is our own software, designed and 
prepared for Einstein hy TATUNG. 

Kuma, Crystal Research, Digital 
Research and Solo are some of the 
country's leading software houses 
. 'APPROVED'/ now writing superb software packages 
for Einstein, and TATUNG has 



Einsoft 



complete confidence in recommending those packages 
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So from today you can explore the genius of 
Einstein with software covering a tremendous range of 
applications. From word processing, database and home 
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languages and games. And 
there's plenty more coming 
all the time, 

Einstein from TATUNG. 
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At work. At school. 

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DIAL 100 AND ASK FOR FREEFONE EINSTEIN FOR YOUR NEAREST STOCKIST 




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jiJ U jjirfi mM*' 1 ^^* ' ^ j j fjgj ? 



Complete that 
unfinished symphony 
with Nick Lea's masterly 
BBC composition. 

THIS PROGRAM will only run on a BBC 1,2 
operating system with Basic 2 mainly because 
the word "OSCLI" b used. To check whether 
the computer you use is suitable, type: 

OSCLU'FXO") (RETUfiN) 
If no error message is produced then this 
program should run. 

The program ij a uh>! for use in the writing, 
development or simple playback of BHiic Is 
uses the BBC's three pitch channels to produce 
a possible three-line tune with simultaneous 
screen and sound note output. Also included in 
the program are routines to save and load tunes 
to or from tape, making it possible to store 
away a masterpiece you arc particularly pleased 
with. For the musically uninitiated, or the plain 
lazy, there is a harmonisation routine which 
generates pseudo-random harmonics tP a tune 
etwefod. 

In its entirety — well, in this un-REM-ed 
version — the program is rather Icmg and may 
seem an effort to type in all in one go. 
If certain procedures arc left out, the program 
will run, until a non-existent option is selected, 
and if found to be useful, they can be added at ± 
later date. The advantage of this is thai it 
initially halves the program length. 




g »3iJi a ,j i iiJiJiji J iJjn f ,n,i3 a j tf 



UM*i*U*uUi\f l$& 



iWiiHilivulUtj 




2A10 Procpilch 



26A0 P roc save 



£790 Procload 



The parts of the program which arc optional 
to the main function arc: 
Line Procedure Effect of losing it 

number 

2280 Procspeed will not be able to 

change speed of 
playback 

will not be able to 
change pitch of 
playback 

will not be able to 
save a tune to 
tape 

will not be able to 
toad a tune from 
tape 
3130 Proc harmonise will not be able to 

use the computer 
harmonise 
Once the program — or section of the pro- 
gram — has been entered in the normal fashion, 
it can be run. This will produce a menu sheet 
with nine options open to the user. They are: 

1. Play tune In memory. 

2. Enter or edit a tuna. 

3. Change playback speed. 

4. Change pitch of playback. 

5. Save a tune onto tape. 

6. Load a tune from tape, 

7. Harmonise a tune in memory, 
fl. Clear memory. 

B r Exit program, 
When first run, there is no tune in the com- 
puter's memory. One can be entered using 
option 2, selected by just pressing 2. Option 2 
(cGnhnu&d On next page} 



YOUB COMPUTER, NOVEMBER 1 9*4 109 



(continued from previous page} 
produces an instruction sheet which sets out 
the keyboard of a piano on to the BBC key- 
board with the farm as shown in table ! , 

li shows how to change the length* of notes 
using Shifted function keys. Three lines of 
music can eventually be built up so the line 
about to be used is asked Tor. A musical stave is 
then printed up and the tunc con be entered. 
Return ends the tunc and displays the menu 
sheet again. Selecting option 1 will now pis-y 
the tune just put into the memory at its cuf n*ct 
tempo. Tunes of up to 300 notes can be used 



s notfls 
Title 1, 



SO G H J 

Z X C V S N M 

c# d* U q* a* 

C D E F G A B 



2 3 S 

Q W E R T 

C* d# 
C D E 



6 
¥ 



7 
U 



I 



f* g* at 
F G A B C 



and up to tJnee can be played al Once, The 
routines to change playback speed and pitch are 
self-explanatory and simply alter the global 
variables: Dd% and Ott%. 

The backing store routines — saving and 
loading — are done using the Beeb's BPut and 
BGct statements, thus a tune is treated as a 



machine-code file, but don't try to run it as one. 
The last section of the program, and the last 
main option, produces harmonics on tracks two 
and three from a subicci tunc on track one. tt 
requires the key signature of the tunc, which a 
selected by pressing the appropriate note, and 
whether it is mulOr ot major. 



Music on the Beeb. Note that the 
italicised "t>" in Una 2050 is CHflS 22b, 

10 4E7HJ ••«•»•»* IUEIC OH tK BEE*** 



By HtC* l.« 



30 R£b*«* 

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(continued on page 112) 



110 YOUf* COMPUTER. MOVEMBER 1 9B4 



BBC MODELS 1-2 OS 




^ 



■ lii \_i 






| 



H 




Uailable from VV. 1 1. Smith. John Men/ics, Boot**, Wool worths, 

Jiid all good software retailers. 

tbo available from Ultimate Play The Game, 

The Green, Ashby de-la-Zouch, Leicestershire LE6 5JLI 






{continued Horn page 1 10} 

34*u t* AX -HA TUT* PRlNT-up* ELK! PRINT 



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HDBDTICB SPECIRL 



16 page pull-out supplement 

♦ Buyer's guide to personal robots 

currently on the market 
♦The technology of small robots 




# Small robots and their 
big brothers 

Pius ALFRED THE ROBOT 

Buitd an educational mini robot 
from an inexpensive O.I.Y. kit. 



fSSUE 

ON SALE 
NOW 




112 YOUft COMPUTED. NOVEMBER 19B4 







Introduce your kids to 
another friendly teacher. 



The Mr. Men and friends, have all gone back to school. 
They're learning a lot So they ca n help youngsters, from 
4 upwards, to an enjoyable start on the rudiments of reading, 
and the basics of arithmetic. 

There are games for keen-eyed youngsters to sharpen obs- 
ervation, and games to help unravel the mysteries of left and 
right. They're ideal forborne use, nursery and primary schools. 




HERE & THERE WITH THE MR. MEN 
Telling left from right, and woriang out simple 
routes carl ccirrruse young children. In these four 
games they learn by giving directions to the Mt Men. 
Walchmg what happens on screen is fun. The games 
progress m ctftaulty as the Chi* en get mora expert 

For 5 to 8 year olds On cassette tor the 
Spectrum 48K, BBC B and Electron fi» 

WORD GAMES MffTW THE MR MEN 
Some sorts of words can cause difficulty for 
chridren just starting to read. This double cassette 
pack takes an amusing look at comparatives and 
superlatives. It also has fun with opposites and keeps 
Mr Bounce leaping about with positional adverbs. 
Fourteen games m all Includes keyboard overlay and 
Illustrated book 

For 5 years upwards. On cassette far the 
Spectrum 48KO« 

Also available: First Steps wrth the Mr. Men - 
games fry pr ^readers, On cassette for the BBC B, 
Electron C8M64 and Spectrum 48K £aS6 

COUNT YffTHOUVER 
Two games in which cheeky young Oliver learns 
to count and do simple sums. Choosing different toys 
m vanots colours requires single digit answers from 
the players. 

Next greedy Oliver asks for lollipops and adds 
up different shapes and cotours Subtraction e 
achieved when Oliver devours the lollipops, He swells 
visibly and hts fate will ctehght young children. 

For 4 to 7 year olds. On cassette for the CBM64. 
Spectrum. 48K, BBC B and Electron C$5 

LOOK SHARP! 

Two programs with seven games to test and 
tram children s powers of observation in an amusing 
way On OW MacDonakJs farm they sort the sheep 
from the geese and the cows from the pigs. The 
games are Memory. Odd-one-out and Snap. 

SORT the second program, is a space 
observer's test with a variety of space scenes to scan 
and remember 

For3toll year olds. On cassette for the 
CBM54. Spectrum 4SK. BBC B and Electron 036 

QUICK THINKING! 

Two futuristic, arithmetical rrund stretchers. In 
Sumvadersatensin numbered space ships drop 
numbered robols Conectty added or subtracting Ihe 
two numbers destroys the robot If vou are wrong or 
late Ihe robot lands Correcl answers are cteplayed. 
Five levels of difficulty 

Robot Tables puts the player m charge of a robot 
making macfune Ma»mum robol output rs only 
achieved by mastenng multiplication tables to give 
the correct instructions to the machine. 

For ? years to adult. On cassette for the C8M64, 
Spectrum 48K. BBC B and FJectron £655 

All CBMG4 and BBC S versions are available 
on disk 




SOFTWARE FOR ALL THE FAMILY 

Available from Boots W.H. Smth. Spectrum and al 

good software stockists Write for a free catalogue to 

Mirrorsofl Holbom Circus, London. EC1P 1DQ, 



flSSKS 



i 




I 


















y 




£12.95 



THE ULTIMATE IN AMERICAN 

SOFTWARE FOR YOU ON U.S. GOLD 

U.S. Gold is stocked by all leading computer 

store*. 



L 



DEALERS! For information on how to become a 
U.S. Gold Stockist write to: CentreSoft Ltd. , CInit 24. 

Tipton Trading Estate, Bioomfield Road, Tipton. 

West Midlands DY4 9AH. Telephone; 021 520 759] , 

Telex: 337268. Overseas enquiries welcome, 



^ 




Apart from the 
excellent game play of the poker the 

added bonus is high resolution 

pictures as the girls shed their clothes! 

A classic of its kind - must be part of 

any comprehensive collection of 

software. 



All Pwwr\cav\ SoPhAtare 




unwraps a 
new game 



Listing 1, 

to C(.eAM00,31*»4 > :CI.S;FP;JWTBJB,*Pl.EASE WAIT A HQNEHT.' 

20 FCLEAWJ 

30 X* 32644 

40 «»Wi: IF *«--EN&- THEN 60 

30 POnex.vAn 'fcH-.**] :x-x*i:ooTO«o 

66 EXEC3 50Q0 

70 EXEC3214I 

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CURSE 

OF 

ABU 

IMBEL 

THE CURSE or Abu Simbcl h an adventure 
gtme written for the Dragon 32. The object of 
the game is to find (he Golden Mask of Abu 
Simbcl — bui beware of the Curse! 

The game uses the standard Verb-Noun 
input format but with a few extras — pushing 
Shift and an arrow key will abbreviate the 
direction commands. For example, pressing 
Shift and up arrow will print Go North, press 
Enter to input. 

Also, when getting an object, you can use It 
to refer to the object. Other features of the 
game *Te split screen scrolling, a real- tune 
clock, a diagram of current exits and sound. 

The Dragon*s sound command has. been re- 
defined for extra flexibility. The new format is 
Sound N,N — where N is any number between 
1 and 65535. The second number now refers to 
numbs of cycles and the first is the pitch. The 
real-lime dock is displayed at the top of the 
screen along with a compass and the room's 
exits. 

First type in listing 1 and Save at the start of a 
blank tape. This program sets up the sound, 
clock and scroll routines, it also toads and runs 
the main program. Second type in listing 2* Do 
not attempt to run this program without first 
running listing 1, as il calls the machine-code 
routines set up in listing I . 

To aid debugging it would be useful io miss 
out lines 5 and 6 until the program is fully 
working. These lines disable the Break key, 
list and LList functions. 

Now Save this program after the first by: 
GOTO 9000 
This will Save and autorun the program. 

I will supply a copy of the program for £2.50. 
Please send a blank cassette and an S.A.E. to: 
Nick Stevens, 8 Hope Place, Musselburgh, 
Em Lothian EH2I 7QE, 



Listing 2. 



l.LXll 



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, t»;*oiOi-'« UN if »»— :■—•<! j. im »ou 

(continued on page 1 19) 



YOUR COMPUTER . NOVEMBER 1 981 US 



I 






- '-". 





A prophecy is about to be 
fulfilled- The Dead will rise 
again to eat the flesh of the 



— ■ 





From the authors 
of ANT ATTACK, 
Sandy White 
and Angela. 



Softsolid 3D* from SPACEMAN 

'Patent pending 



TOK Spectrum 



All titles available from 




Quieksilva Mail Order, P.O. Box 6, Wimbome, Dorset BA21 7PY. 

Telephone (0202) 891744. 



ma 



• 



* 





Spectrum 
games 

Blood & Guts 



A fantastic fight to the death within your 
own bloodstream! 

48K Spectrum £6.95 






- MAY WICO BE V/ITH YOU 






iS: 







w^ 







C*Sfc' 







When you're upagainst all the evil in the universe, you 
need the finest jcystick. Weak, sticky, slow controls 
can onty lead you to your doom- 

\bu need a Wico.* Tile controls in more than 500 
modem arcade games are advialry made by Wico.'* They set the 
industry standard for durability and performance. And thgsa me 
I quality goes into die Wico* you take home. 
Wii'o' joysticks work directly with the 
Commodore 64. TV Vic 207" all Atari* Home 
Computers aint Atari* Video Games. 

Add an interface, and you can connect into 
a Sinclair Spectrum or Apple Jl* and lie* If you 
haw a new MSX computer there's the just 
ssed MSX Grip Handle for you 

What do you get? A man-sized handle 
on a virtually unbreakable shaft. Tough, 
ultra-sensitive Wico' swilchgear. A heavy- 
weight base, A year's guarantee. And more shee 



dodging, chasing and blasting p<jwer than ever before. 

The Wico* range includes the famous Red fell,™ straight 
out of me arcades. The Three Way Deluxe with interchangeable 
handles The light but rugged Boss. And check oul the stated 
the-art Trackball: many owners use it for serious programming, 
_where it gives them effortless cursor control. 

Ask your dealer to let you handle a Wico* Quality 
(you'll find) costs money 

But if you want to have less trouble fighting your 
controls, and more power tor fighting the 
I forces of darkness . . . only Wico* is worthy 
of your hand, 



1 



m 



CaHQUS&GOUMNaS HltX.LDliGHTfJMf^SDi IGK) ^RU 1-508 SdWJ. LOOK 




WICO 

THE FINEST HAND CONTROLS 
IN THE KNOWN UNIVERSE 



NAME IN AU-aXJO SHOPS AfOCATAUDGUIiS. 




(continued from page 1 15} 




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timn bataih a CBOPTBLia* arpia l im* ct-b-Hb. e»h owibs mi ah q.i uhtte warn 

t «AXLET(Bt TO THE bAu. AhB * hlmE IMn achat AAfr* the mt iui. 

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BOTTA 



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TM PL 



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\ 20 YtWR COMPUTEB- NOVEMBER 1 98a. 



For home or business the IBM compatible 

Advance 




For the home user slafl with Model A with its massive 144K RAM 

and outstanding typewriter style Keyboard thai fits within the base unit 

tor portability and storage, ~~ 

Mote the la rge retu m key and positi on of th e numeri c keyboard . Fasi retnevai from 

storage and fast action on games is achieved by the use of the Intel 8086 True 16-bit 

irtcro-procsssor running at 4.77 MHz, 

The Advance 86 runs IBM PC software 



True 16-bit 8056 running at 4,77 MHz. 

13BK or 2SGK with parity plus 16K video 

Basic 

Full 84 keys lactite 

10 programmable keys 

256inJ(0M 

TV RGB. CompSyrsc coktur or monochrome monitor 

Ful screen handhru. 4 screen paged 

80x25 or 40x25 

320 x 200 or 640x200 

16 

Scroll . reverse image 

Audio 

Cassette port light pen. joystick, Centronics 

Bmfl-m speaker 

Built-in ROM 

Any using Centronics parallel interlace 

Hardware a no software compatible with IBM PC Upgradeable 

to Model B Provtston lor 8087 Arithmetic Processor 

t2 months 



Bit Micro-Computer 



Under £350 



CPU Type 
RAM 

Languages Induded 
type Hi Keyboard 
KeytoerdFa6lities 



MeftodofOttciUy 
rjttpiey FadlM* 
Ten 

Gf apho Resolution 
Colours Available 
Graphics Fadfttias 
Cassette Recorder 
Interfaces kdudsd 
Sound 

Operating System 
Primers 
Comments 

Warranty 




Benchmarks 



The standard Benchmarks were run using Advance Basic, which is the equivalent 
of Microsoft GWBasic and Basics on the ISM PC, 



Machine. 


BM1 


BM2 


BM3 


BM4 


QMS 


BM6 


BM7 


awia 


Av 


Advance SB — BOSS 


OB 


33 


7.3 


7.4 


01 


14.6 


23 9 


26 


11.4 


ACT Aprtcol — 60B6 


1.6 


5.2 


10,6 


11,0 


12.4 


32-9 


35 4 


34.4 


167 


IBM PC — SOBS 

i_ . 


1 2 


4.8 


11.7 


12,2 


13 4 


23 3 


374 


30-0 


16.6 



The business user can upgrade to Model 8 by adding 
the Advance Expansion box containing ? * 5 25* disc 
drives providing 720K storage at £956.52 * VAT. 
The Advance 96 Model B otters the business micro- 
computer buyer a n I BM compatible disk- based 
system with twin doves, with Perlect Writer/Speller, 
Calc and Filer Software (MS.'DOSi included tar only 
El 30 3 48+ VAT. 

Advance 86 Models A ". Bare designed and marketed 

by Advanced Technology UK Ltd Made by h rranti in 

Oldham. Delivery within 30 days from receipt of 

payment 128K memory expansi on E 108 70 - VAT 

Advance Technology UK Ltd 

6A Hornsea Street. London N7 8ZHB 

Tel: 01 6090061 lor leaflet; 

On srie warranty tor 12 months by National Advanced 
Systems {pan ol National Semiconductor! one ol the 
targes! companies in the U.SA. for 866. 
*Ex VAT 



To Advance Technology UK Lid . 8A Homsey street, London N7 SHB 

a Please semi Model 8GA, Micro -Computer A Keyboard I enclose £ 399 including VAT 

o Please send Model 86B which includes Model B6A plus Expansion Box *. Software t enclose £1499 lac VAT 

o Please send 128K Memory Expansion £125 inc VAT Cneque/Banttaycard/ Access Ho 

Name Company 

Address Address 



vc 



YOUR COMPUTER, NOVEMBER 1 96* 121 



AMSTRAi 

WORD 

PROCESS 

Roger Hammond gives you a large range 
of options for printing pages, quitting, 
scrolling, or cataloguing the tape 



Dear 
p 'eas, 

T^^~\ ''Mil. .,, 



Listing t. Tha foader program. 












*»» 


10 MEMORY 33999 














20 ZONE 6 












*.. 


30 FOR X-3600O TO 36246 














40 PRINT I T i INPUT XX 














90 POKE I, XX 














40 NEXT I 














70 FOR X-360O0 TO 34260 STEP 


10 










•0 PRINT X, 














90 FOR 1-0 TO 9 














100 PRINT PEEKCX+I* , 














110 NEXT I 














120 PRINT 














130 NEXT X 














140 INPUT "IS THIS CORRECT? (Y/N) M 


jG* 








ISO IF a*-^* OR Q#-"Y ,f THEN 


190 










140 IF Q*<>"N" AND Q*<>"n 


" THEN 140 








170 INPUT "«nttr addrass 


and 


corn 


ct 








valui »«p»r«t*d by a 


comma"] ad 


,x7. 








180 POKE ad T xX:GOT0 70 














190 INPUT "ENTER FILENAME 


"|N» 












200 SAVE N*,§, 36000 ,267 
























The machine code 














3*000 33 32 73 1 


127 


42 


34 


32 


33 


13 


34010 32 290 14 


3 


32 


343 


201 


42 


189 


3M20 77 1 44 7 


42 


32 


119 


33 


13 


32 


3*030 231 14 S 


32 


244 


201 


42 


139 


77 


34O40 1 44 7 124 


203 


90 


187 


33 


13 


32 


34030 2*8 14 S 


32 


343 


201 


17 


94 


134 


34040 43 191 77 14 


20 


S3 


194 


77 


71 


12b 


34O70 18 19 33 14 


230 


38 


193 


77 


71 


33 


346*0 14 S3 13 32 


234 


17 


112 


143 


33 


112 1 


34090 148 14 3 38 


194 


77 


71 


134 


18 


33 


34100 IV 14 230 98 


193 


77 


71 


33 


li 


233 


34110 13 32 234 237 


91 


194 


77 


42 


194 


77 


341 20 99 193 77 71 


43 


14 


233 


237 


73 


198 


3*130 77 237 134 233 


19 


33 


112 


143 


217 


73 


34140 193 77 4 


237 


174 


237 


91 


191 


77 


3&13G 33 94 134 14 


30 


99 


194 


77 


7L 


124 


14140 IB 19 33 14 


230 


33 


193 


77 


71 


It 


34179 14 233 13 32 


234 


201 


33 


112 


148 


h 


34130 240 94 32 33 


14 


231 


201 


17 


94 


134 


34190 42 191 77 14 


20 


S3 


194 


77 


71 


124 


34200 13 19 33 14 


230 


33 


193 


77 


71 


33 


34210 14 233 13 32 


234 


237 


73 


198 


77 


237 


34220 91 200 77 42 


202 


77 


237 


174 


33 


204 


34230 77 71 34 32 


43 


14 


231 


237 


91 


191 


34240 77 33 94 134 


14 


20 


38 


194 


77 


71 


34230 124 IB 19 33 


14 


230 


33 


193 


77 


71 


34240 19 14 293 13 




32 


234 


301 










1 



•*^*-lp 



RobwRJTE IS a word -processing program that 
allows ihc user to Save and Load files, use dif- 
ferent siscs of lent if his printer permits, change 
margins, access nine different pages of 20 lines 
which can easily be printed consecutively and 
exercise full editing functions, I( has been 
written for an Epson KX-80 FT but should 
run on most primers with little alteration. 

The machine code should be entered and 
saved 10 tape first as the program wilt probably 
crash if it is not present. Listing 1 will load 
this if you enter the values given in the 
decimal dump. The machine code should be 



i aa youh computer, novemmw tsw 






saved to tape using the fallowing command. 1 
SAVE <FtLEN AMe>,B,STAflT ADORESS^r 

Do not try calling [he machine code (Hner 
lhan from (he main program as it uses variables 
Poked from Basic. 

Once the machine code is in memory and has 
been uvcd, enter the Basic program. The 
program will normally load the code itself 
when it \% run but, during development, if you 
are sure thai the code is present above Himcro 
it may be a good idei to turn line 290 into a 
Rem statement or to remove the exclamation 



mark from within the quotes so that the com- 
puter will warn you that it is about to attempt 
to load. 

When you have debugged the program save 
it with the machine code after it, making certain 
thai line 290 is back to its original form. 

There arc about two kilobytes left free in 
Basic for any additions you may feel like adding 
and the area above Hitnem rrom 36267 to 
17999 is also free. 

(continued on next page) 



Th» main program. 



t-> m. 




9# uMan 

at- llfKMI »T- lillHltlflll «**»• 1 1 HI la I ■ »«Hti 4i4v 
P* MTTDnWvV 

•i»iii.tMitk<iii« •■■ to n..m.i.i-inmi 

*0 r*m titer* tijiLw u.ioiMpCCp iui I* ■-.* 

IOC wimuOh *0, 1 „•»,!, 3li«.Ii*m ii.MO.Ti.^.iiLMn •-" 

.*i. r,... 

Mu ppi-i ■•**-» n »;",, - pv nnjm j r «, ■ mr »■- 

I ?>\ PfiENl-aW ««M fwt tpviAp *■*« t« HW*il*rt( tPP *i**»t» 

IW '•!i»'«MM'/<D IM IK l<f«r* 
IH<> P*lnl "Ml. ■ ,'(• Mill Ip-I" 

lb* Wl 1 "' ".'i- . ' I m- [VM «v Prt-m' 

iHf 'Titfc "."ll aafcv* Iv l*# Mil IM M4IT1HA 1 

ipi. HpI Hi 'Ctrl m M'.'v*. Hi a tat «niti*>- 

IK F-PIW 'Ct» . - >- « >-«r <il |p» *««•** 

Jiitj p»mi-CTi». a~» ■•CIPPJil'Tl ,*t* •hi* a»l»ta Mi- 

Jltf rain' -CHI a»aj) 'ilMtrtli.ni «r)v i ■>**•* •*•■ 

j» Pftim norr-,*t» nt»iir «lipi ., 

jw roc *' 

■?«■ »*|fci fi.'niMt apil- 

it*i (.La. PI 

;*. hiu mniwiiLi miimni 

j*n i# iKttrt—- IX* :*.. 
-*<, >]ll> *u 

ho cliovixt nviiiinnint -pupse i« ™i»i« wn« 
«.- 

'lu <p,in1 N.CttM . 7' I '*-< IQL1 

!»■ (*I"1 M .C>»* 1 7 ? - I '"t ■ I 
)h' tPIMt •fr.tiatl TH'l ■»-! 

74*> pwi*" h . np« -f rn i - A' i i;**! * ir*£i A ■ i 

fSO PRINT •»,(«.».-?.,-*■', 

JMHlllf pp.t'PM ■.'»'■ (.LOpLI i«ii!»"ll'i 

nnM H,apnFiii ■»■ it>"»ii j>i 

■?♦>. >*(»i t*,r«ni?ii 

IK> r*[H1 -C«rr<n1 „ n*Pr *alti«p* a- r 

... . . ,,,■ -. lift -jlJiu HHr. 'LH M IIIB 1* P«I ■ . ■ maw * 
IKIH CM",*?'? INt" I I- 

■ WHCI»tV-,-|l 1*" ►»*»* >la»JT»»-.-| (Htl- BIT l>,i 
HBKIin HITIW 

«l« niKT,,. ,-lMW ■*» Ipa ■*■*< • * 4rtT H« PMPIPP. 

■•tiIiv nf If* pv-tayp* > 

i |IHIII| on and HlHliPf to* wiwulr dim 

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1 



VOUB COMPUTFH, NOVEMBER 19B4 t23 



{continued from previous page} 

While use of the program's fund ions is 
largely sclf-cuplanaiory, here is a brief 
description: 

Insert press Ctrl and [, The insertion will be 
nude between the cursor and the character to 
ils left. There are a maximum length of 255 
characters or the number of available spaces on 
the page ie., if the cursor was at the left of the 
bottom line The maximum length would be HO. 
The insertion will be shown at the bottom of 
the screen and will not be entered until Ctrl 



jnd I are pressed for i second lime- It can be 
edited normally. 

Delete; press Ctrl and }, Up to 255 characters 
can be deleted, starting with the character (0 
the left of the cursor. Press Del until the cursor 
is under the last character to be deleted then 
Ctrl and L tf you move the cursor too far press 
the right cutsor arrow. 

Tab Stops: press Ctrl and Tab to set a tab 
stop or CLR to clear all tab stops. When Tab is 
pressed the cursor will advance to the next tab 
stop if one exists or else the beginning of the 



next line. 

Cursor keys: they move the cursor one 
space or line in the given direction, within ihe 
confines of the margins and screen, without 
overwriting the text. 

Copy key: gives a large range of options for 
printing a page or pages. If you load a file that 
is longer than the amount of room you have 
allocated for it, the machine code will be over- 
written and the program will crash. IT you are 
not using an Epson printer consult your prinlet 
manual and check Lines 360 to 430, 



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124 YOUR COMPUTER. NOVEMBER 1984 



ly choio 




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•Character sets Multitasking 3 Voice Times 
M/C routines for Basic Use of Zen Use of O/S 
Sample programs 

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Figure 1 list Ot DMACTL and GRACTL 

options. 
GRACTL LOCATION 53277 

Poke No. Action 

1 enable missiles 

2 enable players 

3 enable players * missiles 
E.G. Poke 53277, 2 enables players 



OMACTL 

Add to the 

contents of 

DMACTL 

+ 4 

+ 8 

+ 12 

+ 16 

+ (/(default) 



LOCATION 559 



Action 

enable missiles 
enable players 
enable players + missiles 
enable single resolution 
enable double resolution 
E.G. Poke 559. Peek (559) + 12 +■ 16 
enables players + missiles In single 
resolution, 

The default for DMACTL, from power 
on or from system reset Is 34. 



Figure 4, 
Harness} 
HPOSPO 
(-3) 



Other player/missile registers. 
Locations} Purpose 



HPOSMO 
(-3) 



SizePO 
<-3> 
Size M 

COLPMO 
<-3) 



53248-51 



53252 55 



5325659 
53260 



704-707 



Player 

horizontal 

Position 

Registers 

Missile 

horizontal 

Posilion 

registers 

Player size 

Registers 

Missile size 

Register 

Player/missile 

Colour 

registers 



Figure 5, Priority Register. 

Prior location 623 

Priorities in this order 

PFO, PF1, PO-3, PF2-3, background — 8 

PFQ-3. PO-3, background — 4 

PO-1. PFO-3, P2-3, background — 2 

PO-3, PFO-3, background — 1 

EG Poke 623.2 

PF = PI ay field i.e. colours 0-3 

P = Playef 0-3 

Figure 6, Collision Registers. 

Location Comsion detection 

53248 MO to play field 

53249 Ml to playfield 

53250 M2 to playfield 

53251 M3 to playfield 

53252 P0 to playfield 

53253 PI to play Held 

53254 P2 to playfield 

53255 P3 to playfield 

53256 M0 to player 

53257 M 1 to player 

53258 M2 lo player 

53259 M3 lo player 

53260 P0 to player 

53261 Pi to player 

53262 P2 to player 

53263 P3 to player 

53278 — HITCLR — Poke with any 
10 clear collision registers 

Figure 7. 

PMSTART = START + (S12 + (512*RES)> 

+ PLAYER (128+ (128* RESJ) 

MSB ■ INT (PMSTARTf256) 

LSB = PMSTRT - {MSB '2561 

FOR T = TO 6 

READ A,B 

POKEA,MSB:POKEB,LSB:NEXT T 

DATA 1562. 1561, 1569, 1568, 1580, 1579, 

1605, 1604, 1612, 1611, 1623, 1622 

RETURN 



Patrick Nevison helps 
your screen come alive 
with Atari animation 

Animation with most personal computers is 
a time consuming and tedious process. To 
make a finely detailed image move across the 
screen involves the following process: 
□ Look at the background ahead of the 
Image and temporarily store the contents. 
[_j Erase the old image — draw in the back- 
ground colour 
Q Draw the new image. 
Q Restore the background at lite previous 
image position, 
fj Repeat from step 1. 

An example of this Type of animal inn is 
given in listing 1. There hit to be an osier 
and faster method. Machine code is one 
answer but is not easy to write or debug and 
one error can be catastrophic. Atari owners, 
among others, have a solution in hardware. 
Sprite, or at Atari call them player/missile 
graphics. A player is a graphic object which is 
shape and colour definable, and when moved 
over any background — playfield — image 
dots not erase or alter it in any way. Type in 
lining 2 and see the same animation but using 
player graphics. In fact, there is a delay loop 
in listing 2 to make the two comparable. 

So, whai do wc have in Atari computers — 
four user-definable objects all of independent 



| colour, independent shape, moving rapidly 
anywhere in any graphics mode without 

| disturbing anything else. Sounds too good to 
be true, In fact, there are a tew complications. 
Atari Basic is now showing its age against 
newer structured and more capable Basics. 

Specifically, as regards P/M graphics, there 
arc no commands to deal with this type of 
animation in Atari Basic. Thus, all dealings 
with fVM are done with the immortally 
incomprehensible Peek and Poke. Never fear, 
although the details are tedious and time 
consuming — though well worth it for the 
displays they make — the principles are quite 
straightforward. 

As Atari Basic does not recognise P/M 
graphics, we must cordon orT an area of 
memory to hold all of the data, so that Baste 
does not corrupt the information. The high 
end of memory is ideal for this and location 
106 contains (he number of "pages* 1 — 256 
bytes to a page — free at any one time. In 
changing the contents oflocation 106 wc fool 
the computer into thinking it has less memory 
than is actually there, thus providing a safe 
place to store all of the P/M data. 

Players are all eight bits — dots, pixels, 
whatever — wide, but can come in twe 
heights. They are up to 128 bits high — 
double resolution — or up to 256 bits high — 
single resolution. There are swings and 
roundabouts in choosing which type you will 



ATARI A 



Listing T. 

Hi HDI Llir I 
J* HMI1 "It 



f •' 

IS* pun TtXn —m in,»<mmn> «•*, inn* 
n i-KJi 
■o jmmno i-i,Kil«iiTa t.»tit<n iij.u.p- 
in th.ii 
» hot i-luimiq r*4,BiiPj»mj ■■».iin 
mTO i-i.Hi«HWiB T-i.H 

« *UX I ■!.**( HM»W,Hi(|* ■ ■•.»<■■ 

m T»*,n«iPW)«o its, » 
I **n#t i.^PHMni T-i,».owmD i-i.ium 

it* am * 

l»*Lfil l.KiMtalft I4>HMI T»i,l|.01 
•til l-i.ii 

1» ■WTO I- 

vm ■■!,« 

mm* r-t.»tpc« TB i-?.H 

l» Fl«» T>I,Mi**vto l.t.-iinol r<t.MiM> 

VIS W.DlHWI 1»9,» 

Ut PLOT T, S.HtllD II.MIPWMTII l-l.l^H 

#tB i.*,**,**** i^.if.KiMia 1, if 

i ■ ■» ■ i 

IK ETO »tV UtDF IPntPK.1 



l.lhWQ l,I3i»VDT >>),»lHl 



-1— T 






Lifting 3. 



• V tltT J 

* m> w! m.m i» for m t«i 

it rrtwiiinim umi i».MMtiaamin 

i 

it m F5J, urn- ru»wi apa 

i» MP [*r tmuT ko >v ra thjli 



■m lf«f I MM. PUM> « 
«IMt-miMX<4*l? 

• r* i-*r**i td ii«t»13»."»i t,u.wir r 

*>«*■ torn- riiif* * 

*r**» 

"j« m» nutim st».i° "tit 

i« i4i«t>*w in)i*i<Kiii"><»>.r, 

i ,*>««? i 

0*1* ii*.r?a.^».MB.i»».HiS.?!*,t» 



Listing 2. 



Figure I. Player 
missile memory 
map. 



i« m utr t 

K «ift<i*i urn K»,b«wi[i /-t*in- 
m"t M.IH rm mi* 
JH IMHMimia*, 

m <** at** n**x * **u 

m tm i-<t«n n» imi.iHiMI i.cmn I 
IVHM W w "■»"» 
n ro* r-*TMt>H TO m*n*>t.i 
***** * 

ii. mi i 

i» Mil it*,7B,7iT,ne,ivt.iT 

iv- m* bjt rm*m 
iw pool Mm,* 
iao Mm Mr micq. 
U0PO4 -*».« 
i n <n at umcti 

l*» FBI *»??.> 

IV' !■•< «■ rt*mr 6 CAM* 

HW *(H *«,l» 

31* H> l««t HM> • 

WW *ft*»-«,(M II HMi 



It* 
lit 
Mi 

m 
ii* 
im 

i» 

IM 
f* 

m 
iw 
it* 

Ik* 

i» 

17* 



10k* in" 



Mn m MC1V 



OUm 



pm nm,] 
in mart* e i 

in it «mi 



*> MT milPir, 
H»l */v< 

«!■ <*m nimH>ia com. i»icmi 




Listing 4. 

* M* Ulln) * IW *irr ■&* MklTIM 

I* ioh* »lit*i i*VH± h**f mm urn 
** pob. io*,mm*iii ajiaaw ma <« tmi 
h ' -i-ifwi ru,i.«*i n».«iPMa r»*,*(«i 



(continued on page 13 1) 



128 YOUB COMPUTED, NOVfMBCR tt84 



Pldiv 
tbout 

ad 10 
ions. 
im* i 
a. 

[here 
* of 
lings 
tally 
for, 
rime 
the 
Tuitc 

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Mfc 

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356 

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32 16 



UK. Double resolution uses less memory — 
1 K in total for all Tour players — and is faster 
to animate, but its resolution or image quality 
is poorer. 

The single resolution players use 2K of 
memory, are slower to move out have a better 
quality image. For the sake of argument. Twill 
discuss doubk resolution and potm out where 
details differ between the two type*. So, we 
nee J to set aside IK. of memory for the player 
missile table. This IK is equal to four pages of 
memory — 4 * 256 - 1024 - IK - hence: 
A b PEEK(106M : POKE 106,A ( - 8 for single 

resolution) > 

will "bide" our P/M table from Basic. We 
then must tell the computer, actually the 
Antic video chip, exactly where in memory 
our table is located. Location 54279 is called 
the Player Missile Base Address Register — 
PMllase. Using our previously defined 
variable A, give the instruction* 
POKE 54279.A 

This b in fact just (be start address of the 
table, and figure 1 shows how each or the 
players and missiles are located in the table. 
You will notice that the Player areas do not 
start until halfway down the table. The first 
184 bytes — 768 for single resolution — arc 
unused, but can make a valuable place for 
storing machine code routines or tables of data 
as Basic leaves all areas above PMBjsc 
untouched. 







V\]IMATION 



Locations 184*512 in the table are the 
Missile definitions. The next step after 
making your tabic secure is to clear the areas 
to be used. On many computers, when you 
turn them on much of the memory is filled 
with random numbers. 

This will affect the Player image and so they 
must be cleared. You do not need to clear all 
Of the table, just the parts you arc going 10 
use, For example,, if you are only going to use 
the first 2 players, the instructions would read 
something Like, 

FORT = A'256 + 512TQ 

A'256+768 

POKE T,0 

NEXTT 
The definition of the player's image is 
perhaps the most difficult part to grasp 
Straight away, but is crucial to ful I y exploiting 
player/missile animation. Examine figure 2 
which gives a simple Player definition. All 
players are eight bits wide and I have made 
this one eight bits high. The definition runs 
from top to bottom: Each horizontal line — 
eight bits wide always — has its "on" bits 
coloured. 

These bits arc then added up from left to 
right according to the Binary number system. 
So each horizontal "slice" of the definition 
ends up having a number to define it. Each of 
these bytes is then Poked into the relevant 



section in the P/M lable. These "bit maps" 
have to be positioned in each section 
according lo the vertical position on the TV. 

If you put the definition at the start of the 
section of the table, the image will appear at 
the very top of the TV screen. Place your 
defmilion in the centre of the tabic and it will 
tppear id ihc centre ol die screen, ind to on. 

As an example. If the beginning of Player 
section or the table in memory is given by ihe 
variable START, and we want to place the 
image 10 dots from the top of the screen, we 
would have 

FOR T = START + 10 TO START + 10 + 7 

READ N 

POKE T.N 

NEXT N 

DATA 126.255.21 9.255. 18&, 195.255.1 26 

The players can be placed, or moved about 
anywhere within their own section, and this is 
how vertical motion is achieved, but it is up to 
the programmer id make sure that they do not 
move into another pJavtf's area. Horizontal 
moiion is very much easier. Each player has a 
Horizontal Position Register — HPOSPO in 
HPOSP3. To move Player Q from left to 
right, simply increase the number in location 
53248.51249-51 to cover the other players. 
The colours of the players and missiles are 
read from 704-707, The colours follow the 
standard Atari colour numbers: 



POKE 704.COLOUR* 16+ LUMINANCE 

where Colour - to 15 and Luminance - 
to 15. 

Each player also has a Size register 
(53256-59). - Normal width, 1 - Double 
width and 3 ■ Quadruple wtdlh. Experiment 
with this to see its effect. 

The missiles mentioned before behave in 
most respecls like miniature players. They are 
only two bits wide. They have their own 
horizontal position registers, but take the 
colour of their associated player, and have 
only one size register, making all four missiles 
the same width 

When using PM graphics, one drawback is 
i that the Antic video chip "steals" time from 
I the main 6502 chip to move and display them. 
This means that when P/M are in use all other 
functions will slow down slightly. Conse- 
quently, Atari has made the use of P/M 
optional. Two auxiliary registers are used to 
switih P/M graphics on and off. Graphics 
Control Register — GRACTLY — and Direct 
Memory Access Control Register — 
DMACTL. These must be enabled before 
P/M can be used, A list of the various Pokes 
and their clTect arc given in figure 3. A 
summary of the other P/M Registers is given 
in figure 4, 

(continued on page 13 If 

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(continued from page -29} 

One of the most useful qualities thai P/M 
graphics gfTerj to games programmers is that 
of auinmaiu: "collision detection". Collision 
is the name given when any player or mi$$ile 
occupies the same position on the screen a$ 
any other Player, Missile or any of the screen 
colours — play-field. When a collision occurs 
the computer automatically sets the 
appropriate register and all the programmer 
has to do is Peek that register to see if the 
collision has occurred. 

Listing 3 shows this collision detection at 
work by moving player across 1 vertical 
lines drawn in different colours. The text 
window shows the stale of the collision 
del eel ion register. Also shown in this program 
is another very powerful P/M technique 
known is Priority. 

Priority means that when a Player and 
another object collide — either another player, 
missile or playficld colour — it will appeal to 
pais either behind of or in front of the other 
object. Used properly this can make a very 
attractive took A list of some of the priority 
sellings is given in figure 5. Figure 6 gives all 
of the Collision Detection Registers. The 
register you are scanning may give one of 
several values, depending on which object 
your player has collided with. 

Hot Example, location 53252 — PO to 
playficld — is i he register displayed in the text 
window in listing 3, and depending which 
coloured bar the player is in contact with the 
register will contain a different value. A 
complete list of all possible collisions of 
players, missiles and playficld colours is too 
long to publish here, but experiment yourself 
and you will find that perhaps you only need 
to use a couple of registers depending on what 
program you arc using them in. When a 
collision has oc cured all collision registers 
have to be reset by Poking anv number into 
HITCLR location 53278. 

Just a word on the difference between TV 
sets- All TVs arc subject to a thing called 
Overscan. This means that all TV pictures are 



not centred perfectly — particularly among 
the cheaper makes — and is the reason why all 
computers designed to be used with TVs and 
not exclusively monitors have a border around 
the screen. Player Missile graphics are not 
restricted to the main screen area and can go 
beyond the border. 

This means that of all the combinations of 
the horizontal registers only the positions 
40-1 <H) will be visible on the screen, Take care 
that if you are writing software that will be 
used by other people on differing screens, not 
to use the areas of screen beyond the normal 
borders for playficld graphics or text, for if 
their TV is different from yours, they may 
miss the images off to one side of their screen. 
Happily, a good use can be put to Over- 
scanning, 

If you execute any Graphics instructions 
after setting up your VIM. graphics you will 
have to reset PMBase, GRACTL and 
DM At! 11, . This only taxes a very short lime, 
but can cause an annoying ''flicker" from any 
player or Missile on the screen. This is solved 
by setting the Horizontal positions of the 
players and missiles so that they are off the 
visible screen area while you reset Graphics 
modes and the auxiliary registers. 

Only one problem remains to speed P/M 
animation from basic vertical movement. To 
animate vertically we need lo move the whole 
bii map or the player or missile higher — 
down the screen — or lower — up the screen 
— within its relevant section in the Player 
Missile tabic. 

A machine-code subroutine is the only way 
of achieving this speed. Such a routine is 
listing 4, This can be integrated into your own 
programs, and movement is achieved by 
passing variables through a USR command, 

Finally, listing 5 gives a player editor 
program. This allows you to design a player 
up to 20 bits high using a joystick in port 1. 
Colour, resolution — single or double — and 
width arc all changeable from the function 
keys, allowing you to sec exactly how the 
player will look on the screen. Data from the 



image is given to include in your own 
program, Instructions are in the program. 

Listing 4 is only equipped to deal with one 
player at a time. Embedded in the routine is 
an address which assumes thai the player 
section of the table starts at 15872. This is 
equivalent to the highest place in memory that 
a 16K machine can place a double resolution 
player 0. To accommodate a different player 
and/or a different amount of RAM, 12 
numbers have to be changed. 

Add the short Basic routine below to your 
program and call this routine whenever you 
wish to change the player that you are moving 
vertically. Three variables need to be passed 
on to the routine. Stan being the beginning of 
the entire P/M table in memory. Player being 
the player number you wish to use — 0, I t 2 
or 3. Res is for double resolution and 1 far 
single. The routine can be placed anywhere in 
your program and called by a Gosub 
command, and ending the routine with a 
Return command — sec figure 7. 

There are two places to call the machine- 
code routine from. 
To move down the screen (up in memory) call 

A = USRM536,LENGTH,HEIGHT,SPEED) 

To move up the screen (down in memory) call 

A = USRflSSS, LENGTH, HEIGHT, SPEED) 

The three variables Length, Height and 
Speed must be updated by the user's Basic 
program. 

Length is the number of bytes in the player 
definition. 

Height is the number of bytes offset from 
the stan of the players section in the table, to 
the actual start of the player. 

Speed is the number of points or spaces to 
move the player up or down in any one call. 
Length and Speed will probably remain 
constant throughout a program, though they 
need not. But every time a vertical move is 
made, the Height variable must be updated. 

A = USR (1536. LENGTH, HEIGHT, 
SPEED): HEIGHT ■ HEIGHT + SPEED 
or A = USR (158«, LENGTH. HEIGHT, 
SPEED): HEIGHT = HEIGHT - SPEED 



(listing 4 continued from page 129) 



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YOUR COMPUTER, NOVEMBER 1984 131 



I 





icroMarket 



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132 VOUfl COMPUTCH, MOVt-MBEH 19S4 




The QL Disassembler. 

tO REMark Copyright P. A. Hoi I i day 1904 

100 HODE 4:CSIZ£ 1,0: CLS 

UO INPUT<*'Start address?") ! 

first*: first =2* I NT (convert Cf irst*>/2> 

120 INPUT*" End address"" i * I ast*: I ast=conver t (I ast*> 

130 INPUT* "output devic*?") J o* 

t40 IF o*="" THEN o*='*con_44Bx20Qa32>i 16_128" 

150 OPEN* 15, o» 

160 INFUTCNam* of file of data areas?") < f* 

170 IF f SO"" THEN 

1B0 0PEN_IN#14, f*; Q «?t_t 

190 ELSE 

200 t l=last+2;t2=tl 

210 END IF 

220 IF o*(i TO 3>»"con" OR o*U TO 3>=="scr" THEN 

CLS#15 

230 address=f irst 

240 REPeat I oop 

250 IF address; last THEN EXIT 

260 IF addr*ss=t2 THEN g*t_t 

270 IF address >= tl THEN 

275 diss_data 

2O0 ELSE 

235 d l ss 

290 END IF 

285 addr tss : =addr*-ss + . 

3O0 end REPeat loop 

310 CLOSE* 13 s STOP 



I oop 



1000 DEFine PROCedure diss 



(listing continued on next page) 



FINALLY THE QL arrived. The first rash 
s«med to be to write a disassembler so that I 
could both delve into the inner workings of 
the machine and crack some of the QPOS 
operating system calls, and also check hand- 
assembled machine-code programs, entered as 
data for correctness by disassembling the 
result. There is as yet no assembler available. 
The result is presented here, 

Xesl month 1 will present the first of a 
three-part series on 68000 machine code. 

The 68003 instruction set is extremely 
regular, making the job of writing the dis- 
assembler a relatively straightforward doc, 
both from the point of view of length or the 
resulting program and also from the time 
taken to test it. In fact the disassembler 
consists in the main of select statements — 
SuperBasic equivalent of the case or switch 
construct available in most structured 
languages — which breaks the opcode down 
until the actual instruction has been found, 
together with a set of functions which enable 
the whole of the instruction to be synthesised 
from the code. 

Motorola mnemonics have been used 
throughout, A * character preceding a 
number indicates (hat it is immediate data; a $ 
prefixing a number indicates that hex notation 
is being used. This disassembler presents all 
numbers in hex, A suffix of <B , .W or .L 
indicates that the instruction operates on byte 
{continued on next page} 



YOUFI COMPUTER. NOVEMBER 1984 133 




(continued from previous page} 

— 8 bits; word — 16 biis — or long word — 32 
bits of data respectively. 

After entering and saving (he program it can 
be run- It prompts for the start and end 
addresses of the section of code to be dis- 
assembled. These addresses can be entered in 



decimal, or in hex by prefixing the response 
with a S. The Letters A to F can be entered in 
upper or lower case. 

Try a start address of $168 which is where 
the QL initially starts execution. It will then 
prompt for the output device. Just hit Eafttf 
for output to the console ot else the output 
device name, i.e., SBRl for output lo a primer 
if you have one The last prompt is for the 
name of a Microdrive file which contains 
pairs of addresses of start and end of blocks of 
text or data which should not be disassembled 
as instructions, 
\ This file can be generated simply by 
opening it and printing addresses to it, and 
then closing it again. Alternatively you can 
use Quill to edit the contents of this file. How- 
ever certain points must be borne in mind. 
There must be no empty lines, no header or 
footer and onlv one entry per line. 
The file must be generated by using the 



Quill Print command, and the installed print 
driver should noi generate any preamble code. 
If you do not wish to specify a file containing 
text and data addresses hit Enter. 

The assembly listing produced is in four 
fields. The address field — 5 bytes — and 
opcode field — 2 to 10 bytes — ire both 
displayed in hex but without a $ prefix. The 
instruction itself is next, followed by art error 
message which is given if an illegal or un im- 
plemented instruction is found. Note that the 
error-checking in this disassembler is by no 
means exhaustive. 

For those of you who do not have the energy 
lo type out the program the author is prepared 
to copy it onto your supplied Microdrive 
cartridge. Please state whether the cartridge is 
formatted or not and include £2,00 to cover 
postage, packing and time, Send it to Philip 
Holliday, 44 Lennard Road, London SE20 
7LX. 



(listing continued from previous page} 



toto 

lr>*1tr 

1 020 

addrt 

1030 

Opt 1* 

1040 

103O 

1060 

1070 

10BO 

toso 

11O0 
1110 
1 130 
1130 
1140 
1130 
1160 
1170 

neo 

U*0 

cod*" 

1200 
1210 

iaac 

3000 
SO10 
S020 
3030 
9040 
5090 
SOfiO 
3070 
30HO 

3100 
5110 
5120 
3130 
SI 40 
3 ISO 
SIM 
St 70 
3180 
3190 
3200 
3310 
3220 
3230 
3240 
3230 
3260 
3270 
32BO 
fj *> 
5290 
33O0 
33 IP 
p320 
B33J0 
5340 
33SO 
3360 
33 70 



ln»tr-PEElt_H<*ddr<»»*r IF m*tr<0 THEN 
<in«tr+&3336 

-iddr»iiiti address » : obj»>wor d*i 1 nst r i i *r*=* H " 

in*fcr_typ*«INT(inntrM096>iLET 
ld-ln»tfl n* t r _typ»*4Cf9& 

5EL*ct ON in»tr_typ* 
-Ol op»=t> 1 1 _n*n* 

■ It op(=i>ovti CO] 
-2top*-f*OV**< 
=3: ep**mov*» ( 1 1 
■=4i op**»i »c# 
=5i op( 3 idd -sub* 
-6l op*" br *nc h* 
■7 J op*-i*ov*o.« 
-Hi op*-or _di v* 
■»9*op*^*ul>_*ub** 

■ II iop*-ciK»_*or* 
-l2topf-*nd_imji • 
* 1 3i op**add_ jddK* 
«l-1iop*-*h] f t_ret» 
-REMAINDER iopi»""i*f**tr* h "una»»lgn*d op 



33«> u_|# - -■W H 

3390 END IF 

3400 RE Turn ■#>" Ij *_byt**(fc> V "(A" « r*q fc 

d_jl t (1NT<m./4096> rtOO B) fc uj| 4, ->- 

3410 =7:SEL*ct ON r*g 

S420 -OiRETurn ■*" t, word*! «dv«n« #> 

3430 -I i RE Turn ■*" !• uor d* ( «d van e * J L 

word*(«dvanc*) 

5440 ■2m-*dv»nc*!R£Turn **" t 

addr*s**i*doV**a+x> 



3490 

3+60 
5470 
3480 
34SK) 
SSOO 

3320 
5S30 
5340 
3SSO 
3360 



•3i u-adftnc* 
IF m<0 
d^»» - "A* 
ELSE 

da*- -D" 
END IF 
IF k It 20+B 
w_l* - "-L" 
ELSE 

w_l* - «.W W 
END IF 
RETurn "*" L 



t d ** f. 



obj* TQ 27) op* ■ *r* 



END SEL*ct 
**RlNt*lS,addr» 
END DEFin* di«* 

DEC in* FuNction h***ta) 

RETurn CHR*t* + 4e»7.n j 9>) 
END Derm* h# x * 
DEFin* FuNction *ddr*»m*'x> 

LDC*| y 

y-INT<x/6S336> 

RE Turn h*v*iy) 1> word*(.K-£553£.*y ' 
END DEFine addrtstt 
DEFin* TuNction uqrdttX) 

LOC*l y,« 
?"* 

I<0 THEN j «t +6.3336 
y*lHT<*/23«) 

RETurrt byt*»iy> 4c byt**«£-236*y) 
END DEFin* word* 
DEFin* fuNction bytdn.i 
COG* I 3iX 

*3>*-23fi*lNT. k/29K) 

RETurn H*X*<)t* DtV 161 fc K*K*(xX HOD 16) 
END DEFin* byt»* 

DEFin* FuNction • ! f _arfdr * i*f t moa, r +9 , «l r#l 
LOC«l v 

SEL*et ON *rf_BOd 
■OtRETurn "0" t r*g 
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■2iREtum "(A" b r<*g a ■)" 
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■fit x>«dv«nc* 

IF k < THEN 

d #* f -A- 

EL5E 

d •* - -D- 

END IF 

IF x let, 204B 

- It * -,L" 

ELBE 



t byUt(x) l."(PC, 
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3390 - REMAINDER t*r*-*r* t. "r*(l jrjrjr 

firor'iRETurfi "" 

3390 END SEL#ct 

3600 END SEL*ct 

56t0 END DEFin* *ff_.ddr* 

S&20 DEFir»* FuNction »ourc* ***(*li*3 

3630 LOC*i x,y 

3640 .-opfi*)d DTV B MOD Biy-opfl*ld HOD Q 

3630 RETurrt #ff *ddr*(x. y,»ij+> 

3660 END DEFin* «ourt*_**> 

3670 DEFin* FuNction d**t _**« < in* ■ 

3&BO LDC.il x r y 

369P K-opfi*ld DIV 64 MQD Biy-opfi*ld DIV 312 

5700 RETufn »lf.*dflf»'.»iyi«l!*' 

3710 END DEFin* d#*t_*a* 

3720 DEFin* Fuhtetiis*i «u** 

3730 LDCal M 

tt - Of>rt*rd DIV 64 HDD 4 



3740 
3730 
5760 
3770 
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SEL*ct ON % 

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■ItMTurn ".w 

■2iRETurn ",L" 

-REMAINDER i*r»-*r* 4< ' 
fi*ld u iRETurn "* 
3BO0 END SEL*ct 
3810 END QEFin* m*t 
5G20 DEFin* FuNction condition* 
5630 LDCjp I v 

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3S30 SEL*ct ON * 
3060 -OiRETurn "T" 

SS70 'li RETurn M F" 

3380 -ZiRETurn "HI" 

Sfl^J -3,R£Tui-n "LS" 

S90O MlRETorn "CC" 

5910 -SlRETurn "CS" 

5920 -SlRETurn *NE" 

S930 -7 1 RETurrt -EO* 

394Q -BiRETurn "VC" 

3930 -9 t RE Turn "VR" 

S960 -LOtRETurn "P(_« 



•rror in «i;» 



(continued on page t3fy 



X( 



d 



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t. 

5 



134 VOUR COMPOTEH, NOVEMBER 1984 




What the competition 
hasn't been waiting for. 



Latest version of Forth for the BBC 
(Is not rehashed Forth 79 Code) 



Unique Stack Display Utility 




16kEpromtype27128 



Multi-tasking operating system 
for Real -Time use. 



Here's the Forth EpromfoMhe BBC Micro that makes all others 

It's Mult i Forth 83 from David Husband who has built his 
reputation for Quality forth products with his IKS ) 'Forth ROM. 
Spectrum Forthl/O Cartridge and now New MuUiForth S3 for the BBC 
Micro This is not rehashed Forth 79 Code, bul a completely new 
version of the Forth 83 Standard. It's unique in that it Mulli tasks, and 
therefore the user can have a number of Forth programs executing 
ouslyand transparently of each other 

Mulli- Forth 83 sits m the sideways ROM area of the BBC along 
with a ny other RO Ms in use . 1 1 is com pa t ible with t he MOS, and 
spec la I ly vectored lo e na ble a system to be reconf ig u red . 1 1 con lams a 
Standard 6502 Assembler, a Standard Screen Editor, and a Unique 
Stack Display Utility 

With this Forth, David Husband has provided the BBC Micro with 
capabilities never before realised And being 16K rather than BK is 
twice the sire of other versions Multi- Forth 83 is supplied with an 



extensive Manual { 1 70 pages plus) and at £45 + VAT it is superb value 

Order it using the coupon adding f 2.30 p&p {£5 for Europe, £ 10 
outside) or if you want more information, tick that box instead Either 
way. it will put you one stepahead of ihe competition 

Pi-nJ trv Mull.' wt*83 lor BHC M<ro MS-VAr Dr lua( fyilCffl'K DwflO tV4T 



1 1 1 1 1 1 1 1 II 1 1 1 1 




►JiTir. 



I 



A#llC"iV_ 



.PWKsX*. 



SUUCT TO AVAMHUTV FOR < O O S ONWARDS 
Sf"dtoSi.yw*»Sollw**. 31Xij»««B«dL Bov'rwmoulti 



PjMW H*id me more rfifcpnvilon 
^Mufti-foilhSJ 

"]S«£I' """•*•"'! iOr*wdj* 



Siuvtiivc 



SOFTWARE 




MULTI -FORTH 83 FOR THE BBC MICRO 

IT TRANSFORMS THE HOME COMPUT ER 

OUT OF ALL 

REOOGNITION 

Because Touchmaster is a 
touch sensitive surface which effectively 
bypasses the keyboard, it has none of 
the keyboard's complications, typing skill 
requirements or .potential errors, 

To operate Touchmaster, you 
simply slide an overlay onto its surface, 
load the matching Touchware into your 
computer and touch the overlay 

For repeatability and resolution, 
no other ostensibly comparable pads can 
touch Touchmaster 

In fact, Touchmaster's unique 
technology makes it state of the art when 
it comes to such pads. 

Other pads might fairly 
be described as peripherals. Touchmaster 
goes a lot further, it respecifies the home 
computer. 




Now anyone can master the home computer 

TOUCHfflASTER 



>7 



For full details, contact Touchmaster Limited, 

PO Box 3, Port Talbot, West Glamorgan SA13 1WH, 

or phone Teledata (01) 200 0200 



YOUfl COMPUTER, NOVEMBER 1984 135 



(continued from page 134} 



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130 YOUR COMPUTER MOVEMBEH 1984 




©d)©M® 

r . 5UWR-FAST LOADING HMC J^dL 

P-j QE commodore OT 
y B.B.C. MICRO 



©CD© 
electron 




A FANTASTIC NEW PROGRAM 
FROM BRITAIN'S LEAPING SOFTWARE HOUSES 

fly the bee around 

the grid avoiding the toadstools. 

Spin the turnsti.es to evade the spiders, or 

coax them into the fireballs. Collect gll the 

pollen to slide back the exit doors to advance to the 

nnxi insect ridden level 
£6.95 (BBC version £7.95) 

'# Commodore Disk price £9.95 

L 




COMMODORE 64 VtftSION 




48K SINCLAIR IX SPECTRUM 










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ifla 



"UNDERWURLDE" recommended retail price £9.95 inc VAT 

Available from W.ri.Sl*HTHS, BOOTS, J.MENZIES, WOOLWORTHS 

and all good software retail outlets. Also available from 

ULTIMATE PLAY THE GAHE, The Green, Ashby-de-la-Zouch, Leicestershire LE6 5JL5 

(POT included) Tel: 0530 411485 



48K SINCLAIR IX SPECTRUM 




"KNIGHT LORE" recommended retail price £9.95 inc VAT 

Available from W.H.SNITHS, BOOTS, J.MENZIES, WOOLWORTtIS 

and all good software retail outlets. Also available from 

ULTIMATE PLAY THE GAPIE, The Green, Asllby de -la Zouch, Leicestershire LE6 5JU 

{Pflrf included} Tel: 0530 41 1485 



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CASSETTE 8-9S DISK IOW 



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Slate Soft Ltd, 

Business & Technology Centre, 
Bessemer Drive, Stevenage. 
Hertfordshire SG1 2DY, 
Phone (0438) 316561. 




J<aaliu Something £Zte. 




LO ML, 

rDISPLAY riLE ' 
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Had any close 

encounters with 

machine code? 

Mow's the time to 

meet it head on 

with Anthony^ 

Nwokoye 




ASSEMBLER 



This mottRAM was written for ZX-81 owners 
who would like to move on to machine code 
but who do not WWW 10 buy all the necessary 
assemblers, monitor, etc. It only occupies 
J.75K of memory, above RAM lop. and has 
features you would expect 10 find from the top 
commercial products. These features are: 
The ability to assemble any Z-60 instruc- 
tion — pages 181 to 187 ol 2X-81 Basic 
Manual. 
B II assembles to any part of the memory. 

■ II nannies all labels. Including ihose 
wtiicn require 16-bit address 

■ ii accepts decimal, hex or Mnvy 
numbers. 

Q The ability to have messages imbedded in 
your code by pulling the message 
between quotes 

B Comments and reminders may be placed 



alter an asterisk, You can also have 
muiliple instruction, with each separated 
by a semi-colon — ihe whole code could 
be assembled from one line. 
With these facilities, it would make ii easier 

10 write fast and smooth made-type games, 

and improve your machine<ade techniques. 
The machine code itself is stored in a Rem 

line 3,871 byies long. This is obtained by first 

entering 

1 REM 221 characters. 

then edit line I and change ii to 2 and edit 2 and 
change ii 10 3 and so on, until you have 1 to 17 
lines. 
Then add 

18 REM 7 characters 
then you POKE 165 12.15 
POKE 1651 1.28 



The We* loader 




SB 


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thun you cruet ihe hex Kudei Unci- you've 
entered the code and saved ii 10 tape you can 
' try out the assembler. 

Ijjad the program. When ii has been loaded 
you should list it. You will sec a long Rem 
statement followed by a mixture of weird 
characters. This i* the machine-code assembler 
and the computer is only listing the first 400 
bytes or so of the code. This code needs to be 
about RAMlop, so to do this you type: 
PRINT USR 16514 .. . (Newiine) 
and then you will see the computer New itself 
as it sends the code above RAMlop and clear 
itself 

Now that the computer is clear and the 
machine code is above RAMtop, you are ready 
to enter your mnemonics. 1 am going to have 
diflicutiy explaining this, so please siay awake! 

Before entering your mnemonics, you need 
to cnicr a Rem line that is suitable to hold the 
code. The code does not have 10 start at 16514, 
it can start at, say, 22000. Before any 
mnemonics are cniered you need a Rem line 
with an opening b ra c k et) so ihc assembler 
knows where the code begins such tt; 
1 Rem . . , necessary bytes 
10 Rem { open bracks 

{continued on page 1431 

YOUR COMPUTER, NQVEM8CR T984 HI 





w 



THE GAMES LANGUAGE OF THE SO'SI 

Now m v knowtede* ofmochrne code, you con write 



N 



fan, smooth, professional,, totally anginal games and market 
Them without paying royalties 

Even ifjiou have already mastered machine code, we believe that 
the time and prop/ems saved by writing in White Lightning 't 

H^ F OftTH- based high levef tonguoge cotiW revolutionise 
commercial games wrong for veors to come. 

J| /DEAL /DEAL *s a n interrupt Dfrven\xtendibie Animation s ui) 
If «ar»gaflge Once you hove mostered JOEAL's easy to iMm set of 
■ o*er 80 common* dndjust a little FORTH, you will be ready to 
ff produce oreode-ejurjliivgomes even if you don't know mac 
'1 rode. Up to 2$5 Spates, each with its own user-defaed dimensions 
\ can be moved a round the. screen for memory), scrolled, spu n, 

:ted enlarged Of inverted" vw|h amazing Speed and smoothness, 
Operators are possible between screen windows. Sprites and 
Sprite endows, Sprues ccm even stt etc* across several sc/eens, 
so those difficult scrolling landscapes [hot form the basis of so 
many games are easy to achieve, Sinclair's own sound and 
graphics commands such as CIRCLE, DRAW and SEEP are 
supported, and there ore some unique collision detection /be riffles, 

MULTI-TASKING Sccous e White L fgh&iJiw uses interrupts, 
you can effectively *un two programs at once. This mean 
course, that games like Space Invaders and Defender cart be 
written without complex timing calculations. So while one 







H I T E L 



V 



\l 



II 



1/ 



program smootfifv scrolls the landscape, the second animates 
the other characters This rs undoubtedly one ofVvhite 

Lightning's most powerful features, 

MARKETING AND PORTABIUTY Although White 
Lightning uses on integer fQRJHai ns nost language, programs 
cart be written m a comfrnafifln offiASfC FORTH. IDEAL and 
machine language. 

What is more, programs written m FQRTHltDEAL wi« be highly 

portable between the Spectrum and implementations under 

development for other popular mctos. 

When it comes to marketing your completed games, there's no 
Diem ait tier. In fact Oasis themselves will offer to market 
• tooling software. 

SPRITE DESIGN White LgftCriing, comes complete with a 
separate 2QK program far developing the Sprites used m the morn 
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scratch, fj also comes compete with T6Spre.de/5nedcharacters 
covering game* fr&e Asteroids, Pac-Man, Assault Course, 
Defender, Spot* invaders. City Bomber; Lunar lander. Fragger, 
Cenvp ede, Donkey Kong and mar-, wre. These characters 

are ready to use or can oe enhanced. And Spnies can be saved to 
tope between editing sessions before t > loaded into 

the mam program. \ 

The High Level J 

Graphics Development 
System for the 
SPECTRUM 48K 

inr nr u m t^EZ 

ANDCOMING SOON! 
the power of White 
Lightning on the 
COMMODORE 64 i 



I 
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,e programs whkhr 
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A mu In -tasking 
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ite Development 

ram together 

m-jKJck 



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applied with a FUEL 
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if your lotal dealer doesn't stock White Lightning, just 
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Please send me White Ufhtnlng System Packs 

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Name; - 

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Oath Software 9a Alexandra Parade. Weston-super-Mare, 
Avon, BS23 iQT Telephone: (09J4) 41 9921. Every product 
carries a lifetime guarantee. All prices include extensive 
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: 



fcononuod from page 141) 
ill mnemonics are entered in Rem lines like so: 
1 Rem . . . 
10 Rem( 
20 Rem Ld A.O 

to have multiple statements use a semicolon: 
1 Rem . . . 
10 Rem ( 

30 Rem LD A.O; RST16; BIT 7.(HLfc etc 
The use of labels makes any assembler, with- 



out doubt, much easier to use. They ate used in 
instructions Like JR or DJNZ, and you can even 
have 16-bit labels where ihc computer fills in 
the necessary two bytes. To enter a label you 
have to type a colon followed by an L and then 
[he label number, and then again a colon. You 
have to do this before the required statement, 
like so; 
1 Rem ... 
10 Rem( 



20 Rem; Ll:tMC HL- JR LI 

The label number can be anything from to 

255 and must not exceed these values as the 

Labelling system won't work correctly. 

Now for the 1 6-bit label. En an operation like 

so: 

I Rem . , , 

10 Rem { 

20 Rem :LO:SET 7.A;XORA etc . . . 

(Continued on near page) 



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VOUfi C0MPUT6H, NOWMaeFt 198* 143 



(continued from previous pago) 

30 Rem LD BC. LO - here, BC is tended with 

the I 6-bit address of where label would be 

when the mnemonics are assembled. 

or: 

30 Rem: LO:SET T.AjXOR A etc . , , 

30 Rem Call LO — the address is automatically 

done when assembled. In all the examples I've 

used decimal numbers, but I could easily U wr 

hex or even binary numbers. To enter a hex 

number, you must put on asterisk before it like 

so: 

LD A.'2A, Of LD DE "B2CA 

For a binary number, you put a plus^ign 
before it like so: 

LD, HL, + Oil0i0i0i000010r,or 
LDC +10100011 

One of the special features of this assembler, is 
that you can have messages imbedded in your 
code. These can also be labelled and are put 
beiweeen quotes. Here is an example: 
1 Rem . . . 
10 Rem ( 

20 Rem "THIS IS A MESSAGE" 
and label the same like so: 
I Rem , . . 
10 Rem ( 

20 Rem:LS:*'THIS IS A MESSAGE" 
JO Rem LD HL.LS^LD BC. eit:. 

To have reminders and cornixicnls in your 
mnemonics, so you know which part does 



what, you use an asterisk. This is put before the 

reminder. 

Like so: 

I Rem . . . 

10 Rem | 

20 Rem 'THIS IS A COMMENT 

30 Rem LD HI. 2A0K; etc 

40 Rem * THIS IS etc and so on. 

Now when youVe finished your mnemonics, 
you enter & Rem ) close brackets. This has to 
be a! a line, at the end of your mnemonics This 
is so the assembler knows when the end of 
assembling has been reached. Then you type in 
ihis short program to run the assembler: 

9990 LET ADD =16514 

9991 POKE 33767, MT (AOD/256) 

9992 POKE 32766, ADD - 256* INT 
<ADD<256) 

9993 LET A = USR27819 

The value of Add doesn 't ha ve to be 1 65 1 4, but 
can be any address where memory is reserved 
for the code, except 27819 or upwards as this 
holds the assembler and the label stack. Both 
address 32766 and 32767 will hold the address 
of the place the assembler should dump to. 

Now for the moment of truth. Type Run. 
You should see the screen flicker and at the top 
of the screen: 

LOOP ACCOMPLISHED 
should have been wrillcn. This means thai if 
you now List the program, you will see at line 



number 1 the compiled machine code, and all it 
well. 

However, if the computer prints: 
I CANT ASSEMBLE ONE OF THE CODES 
then it means that you've made an error wilh 
one of the mnemonics. To help you find the 
error the computer displays at the bottom of 
the screen a 9 followed by a / sign. After this u 
the number logo where the mistake occurcd so: 

915 
would mean a mistake has happened at loop 4. 

If the computer prints: 
YOU HAVE MISSED A LABEL USING JUMP 
inply means that you have in the 
mnemonics requested a label using JR, DJNZ 
etc when this label doesn't exist, 
YOU HAVE MISSED A LABEL USING CALL 
would mean that you've requested a non- 
existent label, maybe using CALL L92, LD 
HL. L12rtc 

There must only be one space between the 
command and the next number or register in 
the mnemonics, For example LD (65535). A is 
acceptable, while LD (65635), A is not. You 
use a full stop or a space to separate each 
section. For example, LD A.B. is good, as is 
LD A B, All RST should have their numbers 
in decimal and have the numbers close to the 
letters like: RST46. All label numbers should 
be in decimal > and there should be no space at 
the end of the line. 



Enampte program f. 

1 PEM 

*S S =£M E-P"'=~5_ 
10 REM 
£0 REM 

25 REM - THI» MUr^" B£ -I^IET 
JJTH R55EHBLER fiSOUE RAM~0C i 

50 PEM +REPI TC BE ASSEMBLEC 
UITH SUPER =r M BLER AT ADDRESS 

514. .,-,-.,— s^^ km— —— -~=— 

50 REM . ' _; 

:C REM -0 *RAND LD HL.fl6iCi 

70 REM _: DE. 154-35) ; ACE H_ . I 5 

ae rem _: de. 164.36) ;flc-e hl.de 

_:• £16434 .hl _D fi.L.RE* 

^0 c=m __ CAl^ _0 AND ■=: 

-30 REM LC : .A 

-110 REM _2 :-L- _J AMI} ^: 

120 REM CP 44 JF '.: L2;LD 8, A 

130 REM 2ALL 299* 

_~0 REM _I -, _5A22 ;CP £54 RET 
Z _ fi 

>a REM I 

r=j? LET RDD*16514 

9 991 POKE 32767 INT p:d ==i 

9992 POKE 32766, ADD-236*INT ADC 

9 9 9.Z _E~ A=U5R 27B19 
Example program 2. 

I <=EM , , , f j.. t > . . . 

»«*■*■«•#*•« 4**9* t* ****** 

I * . i * * p ■ i * f p # | l ******** p * * I ■- ■>* ■ 

■ . . q i a m m 

_T REM - TJ ^„„ 

2= -i M - ^^iz must ee lgade: 

ITH ASSEMBLES ABO'JE RAMTO^ . 
30 REM *REAC TO EE ASSEMBLES 

rrn supep sembler at addre3= 



40 
50 
50 
DD A. 
~0 
=■3 
9^ 

:0O 

110 

120 
9990 
9 9 9 i 
99^2 

25 5 
9993 _ET R«USP 2" 19 

Example program 3. 

1 REM 



REM LD B.52, L0 PUSH BC 
PEM LD C5._2. PUSH DE 

&EM _D B.li _1 LD A. ICE fi 

12= _: :e .a 

REM INC -5 DJNZ Ll 

REM POP DE LD BC.14 

REM :-__ 2923 

REM POP BC DJNZ L0,RET 

PEM L2 DUR COMPUTE? 

PEM ) 

-ET RD0S16B14 

POKE 3275" IN" [RDD/25G 

POKE 32765 ADD-255-INT ADC 



5 
_0 
20 
25 
UIT 
20 

- rr 

1 = 5^ 

40 

50 

- 

LD A 
~0 

&ET 

30 
90 

R.D 
::0 

12J 

_:0 

9 990 

9r9 1 

9^92 

9 99 .- 



-MPPAC5P 



PEM EXAMPLES 

-EM 

REM *| 

PEM - THIS ' J '- : =~ 55 _ 

- - = 55" , 5_5- -=:^5 =—•--;-, 

= E , ■ , -PEP.:- TO BE ASSEMBLEC 

- f-UPER "5EHBLER P* ^i:~ziz 

4. 

PEM LC :._2"" _0 PU6M BC 

REM _:■ DE . C 16396 J i LD C.2-3- 
REM Ll -" E.21 ^£ INC DE 

. IDE . INC A 

-EM BIT f.P.JR Z L2 RES 6. A 
~* . A 

pem . ^1 _: 'de .p djnz ^2 
pem inc :e :■=: : jh nz li 

pem ld 15.5 50 ^4 dec de - ld 

2? 255 JR NZ L4 

= e*- 1 - := e: dec : . _p '-0 ^0 

=5M PET 

PEM 

LET RDC BiSSlA 

-■0rE 32767 INT IADE 25c 

POKE 32 _ E5 ADD-256*INT ADC 



LET A = L:r~ 2^313 



VOUft COMPUTER, NOVEMBER 1964 



nd all is 



ODES 

or with 
ind the 
tern of 
t this i& 

ifcd so; 
knp 5, 

JUMP 
in the 
DJNZ 



CALL 
i non- 
2, LD 

sen the 
iter in 
^A» 
l. You 
t each 
I, as U 
imbcrs 
to 'he 
tbould 
ace 11 




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146 YOUR COMPUTER, NOVEMBER 1904 




MULTHASKI 



Out OF the most advanced features of the 
Amstrad micro i» in ability to handle interrupts 
directly from Basic, in oihcr machines such as 
the Spectrum, interrupts arc a tool available 
only to the machine -code programmer. 
Anmrad Basic releases the power of interrupts 
to all in a simple but compre- 
hensive manner. 

Although Spectrum interrupts 
on be harnessed quite readily 

— at least on the 46K machine 

— from machine code, the Basic 
programmer is left out in the cold 
commands to support intcrrupt-drivcri pro* 
gnjmmin£. Presented here is a program which 
rectifies this shortcoming by equipping 
Spectrum Basic with a number of interrupt 
commands, as well as the On Error and On 
Break commands found in Microsoft Basic. 
Due to the problems associated in accessing 
interrupts, even from machine code. On a 16K 
machine, it will only operate on the larger 
model. 

The machine code resides above RAMmp, 
occupying addresses 63866 to 6536?, Type in 
lilting 1 and Run it. The program automatic- 
ally lowers RAM top and proceeds to Poke the 
code into memory. Each of the 23 data lines 
holding the code in a hexadecimal form has an 
associated checksum. If a any time the code in 
a line doesn't tally with its checksum then ihc 
computer stops, displaying the line at which 
the discrepancy was found. 

When the code is in a form that the computer 
will readily accept — i.e., correct — you on 
save the code using the command below. Don't 
worry about the long delay while the computer 
Pokes the code; it takes a couple of minutes and 
don't be concerned by ihe blank screen, the 
computer hasn't crashed — hopefullv. 

SAVE "MULTI-TASK"CO0E 63868,1413 

You can reload at any time with: 
CLEAR 63000: LOAD "CODE 

The 10 new Basic commands provided by 
the program can be accessed by typing them in 



Easy multitasking with 
Richard Taylor's 
After and Every, 




SPECTRUM 
INTERRUPTS 



in Rem statements, There's a limn of one 
command per Rem and), as usual, a Rem state- 
ment must be the lasi item on a line, To make 
the computer treat Runs in this new fashion it 
is necessary to initialise the machine code by 
using a Randomise USR 63866 as the first line 
of your program. Subsequently, Rem* will be 
treated in the new manner with no further need 



Listing 1. 



r<=;ic extension 



1? ■ 
19 REM 

+e pcm 

-CM 

CO Ct,CA« *30«« 
?5 ^ET %m®3S*S 
SO -0P t .0 TO 22 

ac o ?:«: at 

I LEW ; ; I IWT ILCM at 2 

THEN .- J' 

1 TZ -£-■ it 5TIF c 
9 LET j« : -- s : 

130 LET ,«COCE II C4i»-*8-7*»»t 

■ : *i »" - a 

1*.' i IS* ** 

150 let >.■-:..■?- ~, 

160 LET b»»*i 

:~o we- 
ll :-" - T lEN ,-: TO 3«« 

i*C lit*? 

• 10 
510 ST0* 

■ C321FCs£3i0FDC323 
D3I8MC3eaBCD3E3r>CS 

=.?: aeoPFEacisocc; i 



3*F2cr-*E2C3aet ; w jb"B22 5 2306*3;: 

P i "^ " 1 * E' E C m £ 1 * ■ f 1 A " 

EB7P4F7E2SFE2 • 

cEC2E3C-3C37Cfl 

:<fC6576 
sibsbceseafsbbbe: 



30C>ES4CFC6FSE 
AEF7FFC6F6E20 

LOFFcisEfAeBfteio** 

! ~3Ei7JFfifiS5?eEe'F 



■ 

t;-26f*i*eio- 

^£es206i'ie5*iEi 

5030 C-*»T« *as? 6D*fli4.72fiFFpF.FFE 

0067*F .: - r 3vCE3 c *2aOSi:.: 

in.fi -£<?F -iEOESaiOOFFSi 

eBFFFr>C876S6CCttaiC' c FC9iiBe*El2e r 

: X * 2F9FEB0C2«9FS" 

*0*0 TflT* 92*4 ■ 65601 11027B7£f>S2 

is3ar>ccP«Afi?cr>E'Pi6Fr>j*i: 

0PSeieFE3fl23EE2iBSFf)£5tFf:--S ,r ££- 
2BEaEEFe2362FEFECO36 - 'DFEE5COr'0''r 

;3**ioccoflFErFFE 

soso dp-*-* 64.oa ftoaeeeFcsflaacocF 

3( ,■>. : : : :z ::■- . rafiCFFFftFFEeiceiJC 

SEE3SEH: -:---"*: :sEc3SeEBis23ti«* 

SCES22BD5C571E00FC-36a.flFFi5FC72OC- 

239314* C-O&lSgaDE' 

fCep T'flTfi 3461 ■'CFifi&FFEiAaO^JE; 

ietFFEor-:5C3iSFfiCDoaicr'F»-Ecoca?A 

lCClEFB23BEBCDE93tDftC3FnC3B7'Faa« 

(listing c&niinved on n&xt page) 



for USR calls. The full command list 15 as 

(bSowa 

AFTER ON ERROR GOTO 

EVERY ON BREAK STOP 

DISABLE ON BREAK GOSUB 

ENABLE IGNORE BREAK 

OROP RESUME 

I'll now deal with each of the commands 
individually. The simplest command is Ignore 
Break, As you would expect this command 
forces ■ program to ignore the break key and 
therefore prevents you from breaking into it, 
As an example, type in the following short 
program, but only if there's nothing important 
in memory, 

10 RANDOMIZE USR 63666 
20 REM IGNORE BREAK 
30 GOTO 30 

Pulling out the plug is the only way out of 
this program. The command in line 20 is typed 
in letter by letter, a little more laborious than 
single key entry but certainly a lot less 
confusing. You can type in either upper or 
lower case but upper case tends to look • bit 
neater. If the first character of a Rem is an 
asterisk then the rest of (he line is ignored. In 
this way you are still able to Add comments to a 
program. 

The nest command, On Break Stop restores 
normality to the break key: 

(continued on next page} 



YOUR COMPUTER. NO V€M9£ft 1 984 147 




{COnUftu&d ifOfft previous p<*Qf}} 

10 RANDOMIZE USR B3866 

20 REM "Press a' <o gel oui of mis 

30 REM IGNORE BREAK 

40 IF INKEY$= -a'' THEN REM ON BREAK 

STOP 
50 GO TO 40 

The lust of ihc three command) concerned 
with ihc operation of the break key is On Break 
Gosub, This is a much more power liil 
command than the previous two; blowing j 
full-blooded subroutine to be called when break 
is pressed. In order to specify which line 
should be jumped to this command must be 
followed by a valid line number. You Rave two 
options over this, you can either put a number 
in directly or the name of a variable. What 
you're not allowed lo do is have a mathematical 
expression, so something like 10+1000 is 
invalid bul 1010 is OK 

The complexity of the break subroutine will 
obviously depend on the application it is being 
used for. In many cases it would simply consist 
of a Run command to restart the program com- 
plelcly if break is pressed. In any case, the 
operation of the routine is entirely up to you. A 
break subroutine is written in exactly the same 
manner as a normal subroutine; terminated 
with a Return com man A 

in order to prevent break subroutines nesting 
themselves by The user pressing break while the 
break-handling routine is actually running, the 
key is ignored while the routine is in progress; 
just as though you'd used Ignore Break, When 
the terminating Return is reached the original 
of break handling is restored Ir b 
possible to redefine the operation of the break 
key from within (he Break handle! itself, 
although itv clleci won't be initialised until the 
break routine has finished, The following short 
example will call the break handler at tine 1000 
only ihc first time break is pressed 

10 RANDOMISE USR £3366 

20 REM ON BREAK GOSUB 1000 

30 60 TO 30 
1000 RRSNT "You've pressed break" 
1010 REM ON BREAK STOP 
1020 IF INKEVS = ' THEN GO TO 1020: 

REM 'Watt II user still pressing break 
1030 RETURN 

When you write a break handler ir is 
important not to use any variables utilised in 
the mam IS altering thcni mighi upset 

Kbc program when it is RetumcJ to, h 
really a good idea lo print on the screen cither 
ir printing might corrupt the layout of the 
program's own output or even, la some 
circumstances* cause it to halt with an error. 

If your program is menu driven then it is a 
good idea lo terminate the break routine with a 
lump to the part of the program which prints 
the menu. If a user selects the wrong option at 
the menu then pressing break will immediately 
return control to the menu without harm. 

Disabling the break key might not com- 
pletely protect a program as there are other 
places where you may be able to stop it. 
Namely when the computer asks "scroll?", 
during any printer/caaseTteAVlicrodrive access 
or by typing Stop in response to an input 
prompt. However, you can intercept these 
possibilities by detecting the error reports that 
ihcy cause using the On hrror Goto n 
command where n is a line number. 

This command allows you io trap any sort of 
error thai occurs in a program. When an error 

148 VOUH COMPUTER. NOVEMBER >9«A 



(hsting continued from previous page) 

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is detected the computer does a Go To 10 the 
given line — not a Govub although the com* 
puler does remember where the error occurred. 
The error handling routine should be able to 
competently handle any error that can occur in 
a program. In common with break subroutines, 
error routines may iusl consist of a Run 
command to restart the program if an error 
appears. 

Some Basics automatically list the line at 
which an error occurred to give you the oppor- 
tunity of modifying it if. indeed, n is where the 
mistake lies. Using the On Error command it is 
possible to add this facility to ZX Basic. It is 
necessary 10 know (he line at which the error 
was found. To be able to do this you need to 
insert a Def FN command in the first line of the 
program along with the USR call: 
10 OEF FN v<») = USR 63672: RANDOMIZE 

USR 63866 

Inside the error routine, FN v(8) returns the 
tine at which the error occurred,. The self-list- 
ing routine 11 as follows, you might find it a 
vcrv time saving debugging aid: 

10 DEF FN vial u USR 63872: RANDOMIZE 
USR 63866 

20 REM ON ERROR GOTO 9990 
<Rest of proQram> 

9990 PRINT "Error "XHRS FN v{10):" at line 
",FN v(8K ":';FN vf.9} 

9991 PRINT 

9992 LIST FN ¥(& 

FN v(9j returns, the statement number of the 
erroneous command and CHRS FN v(10) 
returns the alphanumeric code for the error. 

The Resume command can be used optional 
at the end of an error-handling routine ro 
continue execution of a program from the state 
ment where the error was detected. If you 
follow Resume by a line number then execu- 
tion continues Jrom that line instead of from 
the point of the error. You should always 
terminate error handlers with a Resume if you 
intend to re-enter the program, never use a Go 
To. To prevent tm« handlers from becoming 
IMSted, any errors detected within the error 
routine itself are rcport&l in the usual manner. 
The following program repeats forever — or at 
least until you answer no to the "scroll?" 



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prompt. It illustrates the danger of resuming 
from the point of the error without actually 
correcting the error's cause. 

10 DEF FN v(i) = USR 83872: RANDOMIZE 
USR 63866 

20 REM ON ERROR 60TO 1000 

30 LET a = b: REM 'What b? 
1000 PRINT "Oh doar; (hero's been an orroT 
1010 REM RESUME 

The use of Verify or Load commands from 
within a program often cause> problems if there 
is a tape error since you arc left in command 
mode unce the error has been reported. If the 
program is going to be used by people oilier 
than its author, then it is necessary to print 
insiructioni on the screen of what to do 111 the 
event of a tape error to re-enter the pre 
This works, hut is hardly state of the an in 
uscT-fricnulmcsv 

The On Error command provides a mcful 
solution to this problem by allowing an error 
handler to be called if a tape error is detected 
which can invite ihc user to try again. There 
arc many instances in a program where it is 
useful to use an On Error command, most 
notably when checking the validity of user 
input. Rather than undergoing complicated 
I ing routines it is much easier 10 assume 
that it is right but set up nn error routine as a 
safety net while the input is being processed so 
that any errors caused by invalid data can be 
solved by looping back to the input statement 
to ask the user for the input again. 

The major function of the program is of 
course to provide liilerrupl handling. This a 
implemented in th« form of the command*; 
After Disable, Enable and Drop. The 

scheme of things is basically tins; the: 
timer available counting at a rate of 50 un 
second — the Frames rate. Using the After 
command you can set the timer to a specific 
value. Immediately, the timer starts counting 
down towards zero, Vour program can I. 
continue, not having 10 worry about ihc timer 
any further. When the counter reaches mto the 
flow of your main program is temporarily 
divcncd to D certain subroutine, just as if 1 
(COfitiftBd on page 1501 



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Gosub had been magically inserted in the righi 

position in the program, 

The subroutine is not terminated by a 
Return command but by the normally inno- 
cuous Continue. The syntax of the After 
command is After x, Gosub y. The Gosub has 
to be typed out in full. It is necessary, I'm 
afraid, 10 type ill the seemingly redundant 
comma yust before the Gosub bit. 

The ability for a program to be freely inter- 
rupted in this way is often loosely termed 
Multitasking or parallel processing. 

Here's a silly example — a listing for • com- 
puterised egg timer. ^ 

10 RANDOMIZE USR 83666 

20 REM AFTER 9000.GOSUB 1000 

30 PRINT "Stan boiling; the egg I'll Juat 
brush up on my mental ariihmatlc." 

40 LET a = INT (RN DM 000) 

50LETb=INT|RND*iO0Oi 

60PRINTar + ,, ;b;" = ,, ;a+b 

70 FOR c = 1 TO 100: NEXT c 

80 POKE 23892,255: REM 'Allow 
automatic sc foiling 

90 GO TO 40 
1000 PRINT The. egg la done'- 
1010 STOP 

Line 20 acts up the time delay of 9000 
1/SOths of a second — three minutes. Lines 30 
to 90 just waste type by doing something 
completely unrelated with eggs, adding 
numbers together. Lines 1000 and 5010 are the 
subroutine called when the three minutes are 
up. The After command is a "single shot" 
command in that the subroutine is called only 
once, after which the timer becomes inactive. 
In most applications you would want a certain 
routine to be called at regular intervals. You 
could do this with the After command if you re- 
initialised the timer with After at the start of the 
subroutine. 

However, a much better way is to use the 
Every command. Every ia used in exactly the 
same manner as the After command. When the 
"interrupt service routine" — the subroutine 
called when the timer reaches tero — is reached 
the timer is automatically rc-armed to us 
starting value ready for the next time. This 
program will constantly update the time at the 
top left-hand side of the screen even while 
another program is running; 

10 RANDOMIZE USR 63868 

20LETmin = 0: LET sec = 

30 REM EVERY SO.GOSU© 9900 

40LET» = 

50 PRINT AT 21,0;* LET a = » + 1 

80 GO TO 50 
9900 LET eec= sec + 1 
9910 IF sec>S9 THEN LET min ■ mln + 1: 

LET SGC ™ 
9920 PRINT AT 0.0:("CT AND mtrKl0};min; 

": H 'rt"0" AND a , 6c< ir>j ; sBC 
9930 CONTINUE 

The delay time in an After or Every 
command can be up to 65,535 units, about 21 
minutes 51 seconds. If you need longer delays 
than this for some reason then you could use 
the following method. For instance a delay of 
one hour could be produced by setting up an 
interrupt service routine — or ISR if you like 
abbreviations — called every 10 minutes. At the 
start of the program you would initialise a 
variable — a, say — to x**o. 

Each time the 1SR is called the value in a is 
incremented and when it reaches six, an hour 
has passed. Bear in mind, however, that the 



Spectrum's clot* isn't very accurate and you 
could end up with a quite drastic error with 
such a long delay. 

So far I've talked about the "timer" in a 
singular sense. There btc, in (act, eight timers. 
All eight are completely independent of one 
another in all respects. You can direct inform- 
ation to specific timers in an Every or After 
command by tapping another number in after 
the delay time, e.g., 

AFTER 100,7.GOSU8 9000 
uses timer 7. 

The timers are numbered to 7. tf you miss 
the timer number out, as in previous examples, 
then it defaults to timer 0. 

The Disable command enables — no pun 
intended — you to suspend the operation of one 
or all of the timers. Disable used on its own 
disables all eight timers whereas Disable 
followed by a number disables only that parti- 
cular timer. The inverse command is Enable 
which is used in a similar fashion to re-enable 
previously disabled timera. 

10 RANDOMIZE USR 63868 

20 REM AFTER lOO.GOSUS lOOO 

30 REM DISABLE 

40GOTO40 
1 000 PRINT 'Tf ma op!' ■ 
1010 STOP 

Doe* nothing unless you remove the disable 
statement at line 30 or put in an enable 
command at line 35. You'd usually use the 
Disable/Enable commands to protect certain 
pant of a program from being interrupted, 
possibly because thai part manipulates vari- 
ables used by the ISRfs) and could leave the 
variables in temporary states that mav upset the 
ISR(j). 

The last command connected with interrupts 
is Drop. In an analogous way to normal 
Gosubs, before an 1SR is called the current line 
and statement numbers are stored away on a 
stack so that normal program execution can 
continue quite happily when the SSR is 
finished. In some circumstances, however, you 
might not want to ever return from the 1SR. 
For example, in a game you might wish to set a 
time limit to complete a certain task, say 10 
seconds. You could use After 500, Gosub 8000 
so that when the time is up a jump to line 8000 
will be made. Obviously you wouldn't want to 
return from the 1SR to continue that particular 
part of the game. 

To save leaving the stack in an unbalanced 
stale you would use the Drop command, This 
command simply makes the computer take the 
top item, of its stack and throw it in its elect- 
ronic dustbin. In an application such as this 
you can disarm the timer with an After 0, 
Goaub x at soon as the task's been completed 
otherwise you could find the computer calling 
the ISR at a rather inappropriate lime. 

When a timer counts down to zero the com- 
puter remembers that a certain line is to be 
called by placing its line number on yet another 
stack. When the statement currently being 
executed is finished it looks at the number it 
re member ed and calls the appropriate tSR. 
Because ISR calls arc not processed until the 
current statement ia completed Input, Pause, 
Load, Save, Merge and Beep may hold things 
up. The computer, being a meticulous beast by 
nature, carefully piles up all the numbers of the 
ISR I it's got 10 Call in preparation for such a 
time when it is able to process them. 



Eventually the computer 
room and will no longer bother to store I 
lines. The amount of room the computer 
got Tor stack storage is determined by 
much memory you leave free between RAMc 
and the start of the program at 63866. A | 
value for RAMtop is 63000 which leaves i 
for all but the most complex appltcai 
Using the user-defined function introdu 
under the On Error command it is possible 1 
interrogate any of the timers and find til 
current status. Use FN v(x) where x is the l 
you wish to look at, numbered 8 to 7. 

10 DEF FN v{a) - USR 03872: 
RANDOMIZE USR 63866 

20 REM AFTER 1000.5.GOSUB 4000 

30 PRINT AT 0.0; FN v(5);* " 

40 GO TO 30 
1000 STOP 

The program displays the time remaining ( 
timer 5 as it plunges towards aero, 
function will return a zero if the timer is 4 
inactive or disabled. 

Unlike error and break handler rout 
ISRs will nest to as many levels an you 
although in practice the number of levels 
determined by the amount of tree 
available above RAMtop for the slack, 
thing to avoid is to define an Every ■ 
with a time interval smaller than the 
needed to execute the associated ISR. 
routine will "interrupt itself' in such 
circumstance as the next interrupt will 
occurred before the ISR to handle the pre 
interrupt is finished. 

Eventually the computer will get clogged i 
with in enormous stack of return lines which j 
never quite gets round to using. If this sort i 
situation is a possibility in your program rtica 
disable the timer right at the start of the (S 
and enable it again right at the end. 
writing ISRs, as with break and error ha 
it is important to remember thai the 
should not do anything to unduly upset 
main program by changing the value of one* 
the variables it is using, for instance. 

The computer looks after you a bit by m 
mat teal iv staring the print and plot positions t 
the start of the ISR and restoring them to these j 
values when the ISR is terminated. Print iad 
plot positions are therefore "local" to the ISR. J 
]f you print and draw from within jo ISR I 
the computer will automatically tidy 
damage you might have done by changing i 
print/plot position. 

There are a couple of points of interest ' 
Interface 1 users. First, you should not 
Open * and Close * commands in conjt 
tion with this program. More precis 
programs using the interrupt facilities; 
Error and On Break etc., don't nutter. 
Secondly, any, other Microdrive/Interface I 
commands should be immediately followed by 

RANDOMIZE USR 63869; POKE 23728,0 
sequences. 

Rem statements typed in as direct i 
are treated in the normal way and cannot, there- 1 
lore, contain any new commands. The I 
Continue statement cannot be used in 
normal way as when an error ia 
reported (in contrast to an error handler 1 
called) then all the new stacks are cleared 
the timers are all forced inactive. Continue ■ 
not, then, resume a program without am 
clearing or changing anything. 



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THE PHODL'CTION of amain C quantities of 
add-on or "retro- fit" equipment for the BBC 
Microcomputer must be having some effect on 
the unemployment situation in the U.K. For 
those of you with some money 10 spend, or the 
hope thai someone else will spend it for you, 
here is a pre-Christmas selection of hardware 
and software for the BBC computer, Prices 
range from less than £15 up to rather more than 
1120. 

it's actually quite difficult to keep up with all 
the gadgets and program* thai are being 
developed and advertised for the BBC 
machine. In the course of writing this article I 
have found a second and third ROM extension 
cable mentioned in advertisments, several more 
ROM extension boards, two or three more 
versions of Forth and so on. 

No frustration or disgust 

Only a few of the items in this review create 
any new capabilities for the BBC Micro; you 
can, after all, save programs on to tape) 
exchange Eproms using the four sockets in the 
ordinary machine and process words using any 
one or a number of programs. Whal the devices 
and software discussed here do achieve is an 
increase in your productivity by saving time, 
reducing fatigue and errors and encouraging 
you to concentrate on the task rather than the 
machine. The gain is so great in some cases that 
a job becomes possible where before you would 
hive given up in frustration or disgust 

Mulh 'Forth 83 from Skywave has been 
written by David Husband who produced an 
earlier version of the language for the XX-S1 . It 



is impossible to thoroughly test a piece of soft- 
ware like muhi-Forth 83 jjrj (he course of a 
couple of weeks. Thai applies also to both the 
other chips — Ade and View A2. 1 — discussed 
in this review. !t it possible to give you some 
idea of the capabilities of the program and its 
underlying ideas and any gross faults. 

Muiti-Forth 83 comes as a 27129 16K 
Eprom and Skywave says thai while it normally 
operates a return of post service, the worldwide 
shortage of these chips means that their initial 
stock is unlikely to last for very long while the 
price of £40 may have to change to reflect the 
Eprom supply situation. 

A 1 76- page manual completes the standard 
package and a demonstration disc holding one 
program is available to round off a "dc luxe" 
system. The manual contains a comprehensive 
description of the mulii-Forth 83 system 
although you will need a separate Forth text- 
book if you arc not familiar with the language. 

Forth is a Threaded interpretive Language 
and it is an intrinsic quality of TIL* thai (hey 
run quickly. Muiti-Forth 83 is said to operate 
17 times faster than BBC Basic — when it is 
performing one task. Thai scents a reasonable 
claim, particularly when you see ihc system 
multi-tasking and still operating quickly. 

Normal programs execute a scries of pro- 
gram instructions and stop. Multi-tasking 
allows you to place several complete programs 
into the computer's memory and the computer 
is then directed to hop around from one 
program to another so fast that it looks » 
though all the programs are running simul- 
taneously. 

Mult i -Forth 83 will run up to 28 tasks at one 
time! The demonstration disc shows five tasks 



operating at once and the screen output is very 
impressive. If you start a foreground task u is 
noticeable that some of the others slow down, 
the screen display of the clock, for example, 
may only be updated every two seconds, but 
the overall performance of mult i -Forth 83 is 
stunning. 

You can print a listing of a program at the 
same time that you are doing something with 
the keyboard, sending commands to a robot via 
the user port and reading I he position of a. joy- 
stick. 

The Forth position 

The 1983 standard Forth definition has a lot 
of useful words in addition to those in the 
earlier 1979 standard and David Husband has 
included many BBC-specific commands from 
the operating system. Words are available also 
to control Sound, Envelope, Colour and Time. 
The editor allows the use of the BBC cursor 
keys as well as the usual single-key Forth 
commands. 

Standard Forth uses integer numbers and 
inulti-Forth 83 keeps to this policy offering 
16-bit and 32-bit number-handling words. You 
can, of course, write your own floating-point 
words but the intcftf and fixed-point words in 
multi-Forth 83 will do very well for most 
applications. 

Multi-Forth 83 will appeal greatly to anyone 
who is already familiar with the use of Forth; 
additionally, it should be considered by owners 
of the BBC computer who wish to Stan 
learning about Forth. Multi-Forth 83 does not 
(continued on page 157} 



YOUfl COMPUTER. JYOVtMBfR T9A4 153 



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The ECHOSOFT Programme "Organ Master" written [or ei'.her the SBC Model 'B' or live 
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Both of the above have been specifically designed lo operate with the ECHO Series keyboard 
The ECHO PRODUCT FAMILY breaks both the SOUND and PRICE BARRIERS, representing 

Outstanding quality and value lor money 

-tnchmwofVAT 




Scientific Home, 

Budge Street. Sandixre 

NoitwghunNCIOSBA 

Telephone (0602)394000 



MILES BETTER 
SOFTWARE 

221 Cannock Road, Chadsmoor, 

Cannock, Staffs WS11 2DD 

Tel 05435 3577 



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C 8.96 


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£ 8.96 


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C 8.96 


£12 00 


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£12 00 


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£1295 


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£12 95 


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£ 9.00 


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£ 9.00 


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E 9.00 


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C 9.00 


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»Ai Utti* tot iht Aim, 



Phdrn for Sottw#r C .ivn.LnbiMy and CO<T>p*iih«ma>VB «1lwiit Kit* 



ADULT 
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GAMES 



SPECTRUM 16/48k 



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YOUR CQMPUTEH. NOVSMflifi 1984 1SE 




View ROM Word processor soft- Viewsheet ROM Spreadsheet Games ROM The exciting Arcade 

ware. Norm at price £59.95. software 255 columns by 255 rows. game , Moppet Normal price £ J4.95. 

Normal price £59,95. 

All you need to mix 
business with pleasure 

For only £299. 




Acom Electron .^k Random Access Mcmoo With BBC Basic Normal Price JE199.0Q. 

Electron Expansion Box -Plus I provides various utility capabilities which include: 

a Centronics Interfaces Joystick lnlcrface and 2 ROM Sockets Normal price £59.90. 

Acorn Electron Office Package. Ucmsil pun,h:L-*dscpnratcly £393.75. W.H.S. price 299,00, 

The Acom Electron Office Package at W H.Smith provides you with an 
ideal opportunity to combine all the fun of computer games with practical 
business usage,such as word processing and spreadsheet capability You can 
buy this whole package for £299.00. Separately, the same components cost 
you £393.75. (inch VAT). 

Find this amongst our wide range of carefully selected computer hard- 
ware and software available at most W H. Smith computer departments. ^^, 

whsmith f& 

W^ Subject Id avai lability frvcts comet it lime of totn* to pre« ^£ ^^ ™ 



1S6 VOUR COMPUTER. NOVEMBER 1984 



(continued from page t53) 

have 10 be complex 10 use but it can keep pace 

with your developing skills for a long time to 

come, 

The Adc chip is made by System of Sheffield. 
Ade stands for Assembler Debugger Editor and 
the 36K chip is a complete, assembly language 
development system for the BBC. While it is 
possible to use the assembler in BBC Basic as a 
macro assembler, it is rather clumsy for 
programs of any length. 

If you want to add short sections of machine 
code to a Basic program to speed up certain 
critical sections then you do not need the Aflt 
package. If, on the other hand, you want to 
write a complete program in machine code then 
the Ade macro assembler and from panel 
monitor will become trusted tools. 

Ade will assemble a source Ilk whose length 
is limited only by the disc capacity. 29 pseudo- 
opcodes give you almost all the control and 
facilities that you might need. One or two of the 
pseudo-ops that I have used in Merlin — a 
macro assembler for the Apple II — are absent, 
but they are esoteric and not really essential 
facilities. 

The editor in Adc is based on a DEC mini- 
computer editor called Teas, In addition to 
immediate commands you may set up a defer- 
red command line which can be a very power- 
ful combination of editing commands. 



priority Eprom socket I can move easily around 
various programs from Bask to View A2.1, 
from Commstar to Ade and so on. 

The Adc reference manual contains more 
than 80 pages of concentrated, well laid out 
information. Altogether very good value for 
serious assembly language programmers. 

Ctaro* Replica II is supplied on a 40 or BO 
track disc and its purpose is to take copies of 
cassette tape based programs on to the disc 
with very little fuss or bother. The Replica II 
program has space for up to 16 programs and 
neither the programs nor the copying software 
can be copied from disc to disc. 

In other words you are allowed to make a 
disc copy of a cassette program. When the disc 
is lull you will need to buy another Replica tl 
disc if you wish to copy further programs. 

Replica II costs £12 and worked well on my 
Acomsoft Lisp and Forth tapes as well as my 
Computer Concepts' Logo. You must be using 
Basic when you start to run the Replica 
pr o g r am ; it won't work from any other Eprom. 
( entered the number of sections in each 
cassette program and told Replica II that the ' 
cassette instructions were to Chain the 
program. 

The transfer id disc proceeded automatically 
and all the programs I have loaded ran norm- I 
ally. Both Forth and Lisp continued to default 
to the cassette for file handling Ordinary 



You can also define an editing macro 
command which will be performed whenever 
you press the Copy key. I like the Ade package 
very much even though I have spent hundreds 
o{ hours working with Mcf lin. The Ade editor 
works differently to the Merlin program but 
appears to be at least as powerful and, as 
System points out, you can use other editors 
such as Wordwise, I tried to edit one file using 
View but that was not very successful; I don't 
yet know why, 

The third part of the Ade system is the 
debugger or from panel monitor and dis- 
assembler. Unlike many other BBC dis- 
assemblers, the Adc program produces 
machine-code listings which can be saved on to 
disc, loaded into the editor and reassembled 
after modifkalion. The front panel commands 
are comprehensive. 

One small but very useful feature is that Ade 
starts with an asterisk and whatever you type 
on thai Une u> treated as a "star" command. I 
have always found it tedious to have to press 
the Shift key and the Asterisk key together 
before typing the name of the program I want 
to use and by mounting Adc in the highest 




OFS assumed to cost £95 

Average 5,25 SS 40T 1QQK disc El 30 

Phloopy coals £113,65 


20GKE170 








Discs/tapes 


10 


20 


30 


40 


50 


60 


tapes 
discs 


43.10 

18,00 


66.20 
36,00 


12930 
54.00 


172.40 
72.00 


215.50 
90,00 


258.60 
108.00 


Phioopy total 
5.25 total 


15695 
243.00 


20005 
261.00 


243.15 
279.00 


286.25 
297.00 


329.35 
315,00 


372.45 
333.00 


525 200K 


274.00 


263,00 


292.00 


301.00 


310.00 


319.00 


pntoopy advantage against 
lOOKdisc 


86.05 


60.95 


35.85 


10.75 


-14,35 


- 39.45 


Table 1. 















games programs caused no problems although 
Clares is careful to say in the instructions 
"Whilst Rcplka tl has been made as wide 
ranging as possible there are and there always 
will be exceptions". 

Copy protected discs and locked tapes make 
me cross and nervous at the same time. Clares 
says "Should (he disc become corrupted either 
through a drive fault or incorrect usage Clares 
will undertake DO re-copy the disc for a cost of 
£1,00 cash . , . If it is found upon investigation 
that the problem was caused by Replica II wt 
will re-copy and refund your £1,00", 

That seems a fair offer. Certainly I am 
delighted to have the accessory languages that I 
use from lime 10 time available quickly rather 
than having to wait interminably while the 
cassette recorder grinds away. Good value. 

The original View word processor was 
plagued by a number of bugs and never 
achieved the popular acclaim given io Word- 
wise. View A2.1 is a new, error-free version, 
and is a far better word processor than Word- 
wise for all sorts of reasons. 1 have been using 
View for the Last couple of weeks and I have ru> 
doubt that if you are thinking of spending £4o 



on Wordwise then you should consider paying 
the extra £12 for a View A2.1 chip 

If you write professionally, when the pro- 
ductivity you achieve is important ro you in 
terms of money, you will recover the additional 
coat in a couple of weeks or leas. 

View A2. 1 has more facilities than Wordwise 
and the full screen editing makes it much easier 
to use. Twenty-nine formatting and editing 
commands are available using the red function 
keys and a further 2) formatting and printer 
commands can be embedded in the text. 
Although you will need the printer driver 
program to make the best use of your printer, 
there are two highlight commands in View 
which can be used to send control codes of 
.your choice to a printer. 

The Search, Change and Replace commands 
have powerful wildcard facilities. There arc 
commands — Edit, More, Finish or Quit — to 
cope with documents longer than the available 
RAM in the BBC Micro. Working forwards 
through a text is easy but it is a more com* 
plicated matter to transfer a section of text 
backwards over the boundary between text on 
the disc and text in the computer. 

Nevertheless View does allow you to handle 
long documents using an 80-column display. 
Wordstar, a CP/M-based word processor, is 
easier to use in this respect but costs six times 
as much as View! In gome other ways View is 
more powerful than Wordstar and has a better 
crgonnmic design. 

On top of all the powerful text editing 
functions, for example, you can type in a list of 
names and addresses and then merge these 
automatically into a standard letter. 

You cannot select certain categories of people 
from within a list, but that is no disadvantage 
for many purposes. View will produce all the 
footers, headers and iwo-sidcd headers that you 
might need for writing a book and can print 
one chapter after another from disc or lape 
without any intervention by you. 

I think that the full screen editing is the 
feature of View that I like most and the one that 
separates it most clearly from Wordwise. Some 
Apple word processors costing more than £80 
work in the same way that Wotdwist does and 
the effect of the text moving around a cursor 
fixed on the centre line of the screen can be 
tiring and confusing. 

Professional word processors must be easy to 
use for prolonged periods and View A2.1 meets 
this requirement. The View A2.1 instruction 
manuals are excellently produced and dearly 
written. One or two things are missing in the 
manuals. There is, for example, a page layout 
command called CO — comment — which is 
mentioned at the back of one manual but 
explained nowhere. 

Despite i his minor omission View A2.1 is a 

new piece of software thai now represents 

better value for money than its more well 

{continued on nsxt page} 



VOUR COMPUTER. NOVEMBER 1 904 187 







(continued from previous page) 
known competitor. 

Toolstar is a chip containing a set of utility 
programs. Unlike an ordinary machine-code 
monitor, Toofstar is transparent to the MOS. 
This means that each or the routines in 
Toolstar "performs its function with health 
and afterwards Leaves no trace of its operation". 

Using no Bask program RAM, Toolstar 
functions can be colled from within a high level 
program and the comprehensive manual lists a 
complete disc editor program written in Basic 
and using many Toolstar subprograms. 

You can eitcnd the routines within Tuolstdr 
by writing your own code and calling it using 
the 'Extend command. Eight Basic toots can 
be used to modify, edit or repair Basic 
programs and there arc ID machine-code 
commands which make up a formidable set of 
monitor tools. 

Tools for industry 

Toolstar has four disc filing system 
commands which do away with the annoying 
necessity for a formatting disc by providing 
Formal and Verify functions as well as disc 
sector Load and Save commands. Good value 
for money, especially for people working with 
machine code. 

Floppy disc drives for the BBC Micro- 
computer make up a high proportion of all the 
disc drives sold in the U.K. Despite the 
benefits, a floppy disc drive with the associated 
integrated circuits — floppy disc controller, 
disc filing system ROM and so on — is an 
expensive addition to your machine. 

Table I shows the real costs of the Fhloopy 
system from Phi Mag Systems Ltd compared 
with a floppy disc drive with the same storage 
capacity. The table was constructed 10 show 
how the initial cost advantage of the Phloopy 
systems is progressively eroded as you 
purchase more discs or tapes. 

The break-even point occurs at 44 tapes 
assuming that there is no change in relative 
prices. However, you should not be put off by 
the relatively high cost of the tapes as you will 
have 4.4 Megabytes of programs or data stored 
away before the (loppy disc becomes more 
economical - 

The Phloopy drive differs from the Hobbit 
and Ultiadrivc systems which use cassettes of 
tape wound from one spool to another to store 
and retrieve information, Instead, the Phloopy 
uses a continuous loop of tape like the Sinclair 
Microdrive. However, the Phloopy is unique 
in that it stores in parallel format on tape. 

By storing data eight bits wide with a ninth 
clock track, the Phloopy system offers a high 
packing density and short access times. The 
drive mechanism and data transfer are con- 
trolled by an 8049 microprocessor inside the 
Phloopy case while a 6821 chip acts as the 
interface to the main computer. Once you have 
passed a command to the Phloopy micro- 
processor, 'Format, for example, you can get 
on and do something else with the BBC while 
the Phloopy carries out the command. 

The Phloopy interface is not compatible with 
the interface for ordinary floppy disc drives. 
Installation should not be difficult; you arc 
required to insert four components on to the 
main board while a couple of resistors must be 



disconnected. 

The following new commands are available 
in the Phloopy "LPS" - Linear Filing 
System? 



■HELP PHLOOPY 


■PHLOOPY 


•DELETE 


•RENAME 


■ DRIVE 


•TITLE 


'FORMAT 


•UNLOCK 


"LOCK 


•VERIFY 


•INFO 


•COPY 


■TRANSFER 


'another name 



Additionally, all the normal Basic file 
handling instructions are available. The new 
commands are a subset of those in the floppy- 
disc filing system but seem adequate for the 
tape drive. 

'Transfer is a new command that will load a 
program from a normal cassette tape and 
transfer it automatically to a Phloopy tape, 
"'another name" means that the system will 
look for a machine-code file with a matching 
name and then load and "Run it. 

The delay while you wait for the tape to 
reach the start of your program is certainly 
longer than you wilt experience using floppy 
discs. Conversely, it is far faster to use a 
Phloopy than it is to store programs on 
ordinary cassettes. If you have a limited 
amount of money and reckon that you can cope 
with transfers of data to and I nun other 
computers using the RS-423 port — with the 
excellent Comrnstar, for example — then 1 
think the Phloopy tape system could be a very 
good buy. 

The Viglen ROM system makes clever use of 
the hole in the top cover of the BBC machine 
just to the left of the keyboard. Designed 
originally [0 accept a ROMpack which would 
load serial data for the speech processor, the 
hole has been used by Viglen to mount a socket 
which is connected directly to one of the paged 
EPROM sockets on the main circuit board. 

One immediate advantage of the system is 
that you need not open the Case of the computer 
to change ROMs but there are other benefits as 
well. The Viglen ROM extension contains only 
passive components and uses no power until 



CONCLUSIONS 

I There is some very sophisticated soft- 
ware available for the BBC Micro at 
some very competitive prices. The 
British Broadcasting Corporation's 
decision to renew their contrael with 
Acorn Computer for another four 
years will reinforce the strength of the 
BBC Micro both In the U.K. and in 
many countries abroad. 

B The BBC computer is quite expensive 
but the initial capital cost Is a very 
good investment if you seriously wish 
to use your computer for more than 
one job .If you want to play games only 
ihen the BBC machine may give you 
what you want. If you want to use a 
computer for word processing, labor- 
atory or instrumem control, small 
scale-number-crunching, teaching 
normal or handicapped children, com- 
municating with other computers — 
then the BBC Micro Is supreme. 

I The additional software and hardware 
described in this review do add to the 
BBC Micro's capabilities; whelherone 
or another item will help you or enter- 
tain you at a price you can afford is for 
you to decide. 




you plug a cartridge into the socket, 

Consequently, you will have more power to 
use Tor other purposes from the internal power 
supply and less heat inside the machine's Case. 
If you need to transfer a ROM or lip ram from 
one machine to another, in a classroom, for 
example, the Viglen system could be very 
attractive. 

Equally, if you want to install a special board 
inside the case of the BBC Micro you may find 
that it won't fit alongside an ordinary 
expansion ROM board. 

A act of live empty cartridges will cost you 
over £27 in addition to the £19.95 for the 
original cable. Other single ROM extension 
cables are becoming available using «ro- 
insertion force sockets to hold the EPROM. 

Only you will be able to judge the relative 
merits for your own needs — certainly the 
Viglen ROM system works well and doe* ofTer 
good physical protection to your — expensive 
— paged ROMs. 

There are a number of ROM extension 
boards made for the BBC Micro; most of 1 hem 
will work satisfactorily in an uncxpanded 
machine. Whether or not a board will operate 
with one of the second processors or with one 
of the numerous double-density disc filing 
systems is another mailer, Ideally you should 
sec the ROM board installed and working in 
your machine before paying for it. Having said 
that, the ATPL Sidcwisc board from Advanced 
Technology Products has a good reputation. 

The ATPL board expands the paged ROM 
facility of the BBC Micro from the original 
four sockets to the full 16 supported by the 
operating system. Links can be made or cut to 
allow you 10 install cither SK or 1 6K ROMs or 
Eproms in the first 10 sockets; another link 
permits the use of 4K 2712 chips in the first 
three sockets. 

The 1 5th socket is split into two and may be 
filled either by S/J6K ROMs or bv two 8K 
CMOS RAM chips. The Sidcwisc board 
contains the circuitry to provide battery back- 
up Tor the CMOS RAM — a kit can be 
obtained from ATPL to upgrade the board. 
The CMOS RAM chips can be write protected 
and, with the additional baucry, can then act 
like read only memory. 

There are 10 integrated circuits on the 
ATPL board apart from the Eproms and these 
ore all small chips that will draw comparatively 
little power from the computer's power supply, 

The installation Instructions are not difficult 
to understand or carry out except that you must 
be careful of two power supply connectors DO 
some later issue machines. No soldered 
connections are necessary; the Sidcwisc board 
simply plugs into two IC sockets — the 
displaced chips tit into the extension board. 

My ATPL board works perfectly in my 
otherwise standard BBC Micro. It Save* time 
and provides a permanent housing for the 
Eprom programs thai 1 have collected. 












15& VOUfl COMPUTER NOVE MBEH 1984 



I 







a 



these 
ively 
jply. 
kult 
mn 

I on 

lend 

card 
the 
i 

my 
time 

the 



* EASY FITTING 

* PLEASURE TO USE 
41 LONG LASTING 

* SELLING FAST 

Saga i Emperor, equipped with 67 keys, has been 
carefully designed to incorporate ihe prime Keyboard 
lunclionsof the ZX Spectrum personal computer. 



The style is easy — for your benefit, ihe SAGA 1 Emperor 
Keyboard and housing retains the rear expansion dimensions 
and accessibility for compatibility with an Sinclair sown 
peripherals including interfaces and microdrive \ and most 
other add-ons . , , including ours! 

Not only th is but we have en su red that the assembly of th e 
keyboard is simple — and last. No soldering is required, so that 
within jusi 5 minutes you can replace your current ZX 
Spectrum keyboard with the new SAGA 1 Emperor. 

AND ALL THIS FOR JUST £54,95 (inc. VAT) 



SOUNDBOOST 

Hear that keyboard click ■ - ■ 

with a SAGA SOUNDBOOST 

Your Spectrum's sound 

could be continuously 

adjustable from a whisper to 

a roar through your 

television. With our 

soundboost. r>o , 

modifications need be made 

— just three easy push on 

connections. Supplied built 

and tested to fit in minutes with 

no previous experience required: we send full instructions 

for immediate use. Yours for Only £0,49 

DEALERS CONTACT CAROL MOTE ON WOKING 69537 

These products are obtainable through stockists both in 

the U.K. and abroad, or call us and we will deliver direct — 

our products are available ex-stock 

Stop p ross j u si ro leased . two NEW products added to ou r 

range: 

1 — latest top quality dust covers available just C4.95 

2 — Saga PC! — your very own carry easel — fits 
everything — keyboard, data recorder etc - Customise — 
further details and spec sheet available on request. 



FLEXICABLE 




Oeve toped to re I ieve your 
Spectrum from the pressures of 
life. This rreat 9 inch 
FLEXICABLE comes with two 
connectors which fit your 
Spectrum and your add-ons — 
takmg the load with ease. 
Onty £ 949 



I -K- 

I Pleas* w*i»lo: SAGA Sysw«Ti* Omited 

■ Woodtam Road. Woking. Suftty 

I TetephonoWOktng (048G2 >69&27< 22922 

. W Tofe* 859296 

I *UpnC*ft4->£lud6VAT 

PftP few lor Sound Bo»t *rn) FleicaWe 
| P«PC12S(0fSAGAi Emp*K»UK 
£4 OOtor SAGA i Emporor Europe 

Please send me 




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ThetofcHring SAGA PRODUCTS 

Pttu* mm CHEQUES/* O Psya&o to SAGA Symms iw 







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RULES 

■ The winner ot the competition will 
be the person who numbers the 
Hit Bit s features correctly and. in 
the view of the Editor, comes up 
with the best idea and name for an 
original peripheral for the Kit Bit. 

■ The name of Ihe winner will be 
printed in the December issue of 
Vow Computer. 

■ All entries must arrive at the Your 
Computer offices by the last 
working day in November 1984. 

■ Each person may enter the com- 
petition only once. 

■ Entries to the competition cannot 
be acknowledged. 

■ No employee of Business Press 
International or their relatives 
may enter the competition, 

■ The decision of the Editor is final. 

■ No correspondence on the result 
of the competition will be entered 
into. 

■ Business Press International 
assumes no responsibility or 
liability for any complaints arising 
from this competition. 



At last the Japanese 
invasion has hit the 
British shores. Win a 
64K MSX micro — see 
the Sony review on 
page 62. 



MSX HIT BIT 




I 



WIN THE NEW SONY COMPUTER 



Put a 1 againsl your favourite feature of 
the Sony MSX Hit Bit, a 2 agamst your 
second favourite and soon until you have 
fiited ail ihp boxes. The whole point of 
MSX is supposed to be compatibility and 
the ability lo Interlace your computer to 
other household goods and systems like 
the video or the hi-li. Wo warn you toihink 
up a really original idea for what you 
could con nee I to a Hit Bit and what you 
would use It for. Invent a catchy Sony- 
Si yle name lor your unusual peripheral — 
Walkman. Hit Bit, Trinitron — you know 
the Sort ol thing Then send this coupon 
to Your Computer Sony Hi I Si I Competi- 
tion, Room L221. Quadrant House. The 
Quadrant. Sutton, Surrey SM2 5AS, 



□ Powerful MSX Basic 

□ Built-in electronic diary, 
address book and 
memo pad 

□ MSX software 
compatibility 

□ Professional keyboard 
] Nifty Sony styling 



What would you connect to your Hit Bit? 



Wha! would you use H for? 






What would you call It? 


Name 


Address 







.J 



YOUR COMPUTER, NOVEMBER 1 984 161 













Dvuvei v 30 day* 



^ v^ fi ° * 



s/ 



JT 



9 



tf 



~ — — 


P E 


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Tins i ;.\mk marks full use of the capabilities of 
uiur ZX -81: it consumes the entire l&K RAM 
and gives last, smooth and impressive action- 
graphics during the play. 

The game is set in an enormous aius'-iiest. 
measuring more than eleven times the size of 
the screen. The top of the maze is a long 
corridor — oi ground level — from which lots 
ol gallcricfi are dug into the earth, all coming to 
a dead end sooner ot latet after being split up 
several times. The ants"-nest maze has no exit. 
Each time you start a new game, a new nesi will 
he "dug"; this takes some five seconds 

Sixteen ants walk through the nest while 
laying their eggs. It's your mission to collect as 
many eggs as possible, while watching out for 
these awful ants: they do not chase you, but as 
the game progresses they run faster and faster, 
which nukes avoiding them increasingly 
difficult. 

You need imagination, patience, quick re- 
ad ions, persistence and, of course, a supply of 
hick to play this game. Hut these abilities are 
also needed when entering the program. So, 
brace yourself! 

The program consists of V355 bytes machine 
code, stoted in one targe Rem, and I7S6 bytes 
Bask. The re* of the RAM will be filled by 
variables. 

Entering the machine code is the toughest 
pan. First, clear your ZX-fll by typing: 

RANOUSRO 
Second, space needs to be reserved for the 
machine code. Enter a line I Rem followed by 
128 characters » i.t, four full lines. Then, edit 
this line 23 limes to get Lines 2 up to 24 
inclusive. Finally, edit line 24, change to 25 and 
add five characters. By now 3355 bytes should 
be reserved. Verify this by: 
PRINT PEEK 16396 + 256 'PEEK 

16397-16509 
If a number other than J^ is printed, you 
must start all over again. 



Third, enter the hex-loader — program 1. 
Before running the hex-loader, enter subjoined 
Pokes as direct commands. 

POKE 16510.0 

POKE 16511,23 

POKE 16612.13 

POKE 16514,118 

POKE 16515,118 
These Pokes will convert the 25 Rem lines to 
one large Rem statement, stored in line 0. List 
will only show: 

OREM 
List I will show the rest of the program. Now 
Run the hex-loader . 

It expects two inputs — the start address and 
the finish address. Enter 16SM for the start. If 
you intend to type in the entire program in one 
go enter 19663. But if you prefer to type n in 
over several sessions enter a lower figure; save 
the code you have already typed and when you 
resume typing iiart up where you finished 
previously. 

■ Enter Code; Press E. Type the staning- 
address in decimal. Mow you can enter a 
string of hexadecimal numbers. If the 
program finds anything wrong in this input, 
the screen will be cleared, (be address where 
things went wronp is displayed, and a new 
input asked. Enter a single Q to quit and 
return to the main menu, 

B Check Code; Press C. Enter the starting- 
address in decimal . The screen will then be 
filled with the hexadecimal add res* -contents 
from this address onwards. Eressmp Q 
during the printing or after a screen-fill will 
return to the main menu. Pressing any other 
key after a screen -fill will show the contents 
of the next 1 68 addresses. 

■ Save Code; Press S. The program will be 
Saved. It is best to repeat (his several times 
while entering the code, in ca*e the final 
version won't Load property. 

If everything has been entered correctly, 



/ 






delete the hex-loader and make a lew tape- 
copies ot the code. When you have reached this 
ragCf you arc very neat the finish. Just a little 
more patience 

The final stage is to enter a small Basic- 
program. Don't make mistakes, especially don't 
be mistaken with addresses preceded by USR 
and Poke. 

You will find thai space-saving- techniques, 
like the use of Val, have been applied. These 
are really necessary, so do not omit them or the 
program won't run properly. 

By now, you have reached the end. Pint Save 
the program by: 

SAVE RA 'BACK-UP'' 
and then 

RUN 
The program will he Saved once again and then 
. , . the long awaited result. If now, or at any 
other stage later on, a crash occurs reload the 
program containing hoth the complete Rem 
with machine code and the hex-loader, and re- 
check the code. It you cannot find an error, 
reload the back-up copy by 

LOAD "RA* BACK-UP' 
and check the Basic-program in which you 
should find the error. 

Let's hope you did not come across a crash. 
Press Y to get instructions. Read them care- 
fully. If you think the instructions scroll up too 
fast or too slow, break out directly after the 
instructions, when "press any key" occurs, and 
change the number Poked in line 110. A 
number higher than 160 will make them go 
slower, a number less than 160 will speed them 
up. Run again by^/"* 

HUH 10 
«m have r*»d the instructions, you are 
asked to press a key ar h the st:i: 

temperature can be adjusted To do this, press 
3 to increase or 5 to decrease the temperature. 
If the correct icmpcrature has been gained, 
(Continued on page 165} 

YOUR COMPUTER. NOVEMBER 1984 163 








NTE 



W 



TOR 




I 





/^ 



ONL 
£1.00 
CASSE 
£9.00 

H DISK 



V 



\ 




avVW 



(Continued from page 1G3) 
press New line. A temperature of less than 22 
degrees makes the ants move slower than you, 
at 22 degree?, they move at the same speed as 
you, and a lemperaturL- of more than 22 degrees 
will make them move faster than you do. At 30 
degrees, the game is hardly playable. You'd 
better start with degrees. 

Then the temperature has been adjusted, a 
message appears to say the game will start 
within five seconds. During this period, the 
ants-nest is "dug". It's advisable to press the F- 
key during this period and to keep it pressed^ 
For when the game starts, there will be no 
i at all until you release the key. So, keep 
p prcttcd 

Now you will see the ants'-nest. Three 
quarters of the screen is blank: this is the out- 
mJc of the maze, One quarter, in the bottom 
right-hand corner, shows a maze. In the lop 
left-hand corner of thin maw — the middle of 
the screen — you see an asterisk. That's you. A 
few lines underneath you, there's a nought; 
that's an ant. Take your finger off the key Tor a 
fort moment; the ant will move and leave full 
stops behind it. These are the eggs. Now you 
can release the F-key and start walking. Use the 
keys: 1 - up; ?, ■ left; C ■ right.; M - down. 

Begin by pressing C for some moments. You 
will see that you keep steady, while the maze 
moves lo the left. 

When you cat the first egg, you will sec some 
bars running across the screen. This alsu 
happens every I0O0 points. The ants will then 
speed up. 

If you get bitten, you'll ser this three times in 
succession and you will be repositioned in the 
top left-hand corner of (he maze, The a/tts will 
then slow down. 

After being bitten three times, a nice "Game 
Over" appears. Press any key to start all over 
■gain 

Finally, here are a few useful hints concern- 
ing some possible alterations. 

If you do not like the key combinations for 
steering, or there is a need for other keys in 
order to use a certain joy stick, you an easily 
alter the keys for movement. This is done as 
follow*: 
POKE 16664 ) 

) 

POKE V6712 > ( Code of character Up 

> 
POKE 1 9834 ) 

POKE 18669 ) 



Hex loader. 

00 »ET1 HE* LOROEft 
100 FRIHT "START fiE'DRESS" 
5. IP JNPX'T * 

l£0 PRI«T "FINISH RDDRPSS- 

13C JMRtT F 

140 P£?R HuS TO F 5TER 

ISO LET TmC 

160 PRI*JT M " - ". 

1?P INPUT A* 

ieo print ft*," ■ ■■; 

190 INFUT TOT 
000 PRINT TOT 
£ip i_rr *«p 

2SO FOR K«J TO UEN Rl STEP £ 
£3B let C-iCPr-E Al 4K) -&B) 416+CO 
PE flithtli -89 
2*0 LET T»T+C 
£50 PDt E H*Z , C 
£&£ LET ZO+1 
£70 NE* T r 

2SC IP TOT.T THEN CO TO 010 
£90 PRINT "ERROR - PLtP-ie Ifti 

flGfilN 

330 CO TO ISP 
210 NSST H 



> .Code of character Lett 
POKE 19852 | 

POKE 1B6B1 ) 

> .Code of character Right 
POKE 19825 ) 

POKE 1S695 ) 

> .Code of character Down 
POKE 19643 > 



Not only has the steering been changed by 
these Pokes, but the instructions have also been 
altered accordingly. 

The hi score is stored at the addresses 17046 
up to 17051 inclusive. You can Poke in some 
h is- ore or reset if to wro. Rescuing to zcjo, 
however, can iust as well be done by reloading 
the program. 

If you arc satisfied with the program, and 
you do not want to change it any more, it can 
be made break-proof, This means that, if you 
try to break while the computer execute a 
Basic-line, this mtcrrupi-driven routine will 
respond with the execution of a RST 0, i.e„ a 
lull system-reset. To achieve this, edit line 10 
and change the Peek into U5R, Mow Run, 
record on tape and try to press Break. There 
will not be much program left if the cursor re- 
appears. This is a very good protection against 
burglary. 

I am fully aware of the fact that typing this 
program is anything but a pleasant occupation. 
Therefore! I can supply you with a good- 
quality tape version. To obtain such a tape, 
send £3 to Carlo Del her, Emrtiasiraat 3, 465 1 
RV Sleenbcrgcn, Holland. 



Basic 



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(Continued on page 167} 



YOUR COMPUTED. NOVEMBER 1 98.4 1 66 







Available for BBC Model "B" p 
Electron, Spectrum and Commodore 64 
Espionage is available from all leading 
High Street Stores and quality Computer 
Games Specialists 

£8.95 

Retailers contact Mr. Len Fisher on 
our telephone hot- line (0642) 227223 



A CAME OF INTRIGUE & SKILL IN THE OIL BUSINESS. 





. 



(Continued ttom page IBS) 



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{Contint&ti on page 169} 



NO HO ME COMPUTER IS COMP LETE 
WITHOUT IT 

OaaaaaaaMaaa»*»a«»Oalaaaaaaaaaaaaaaaaaaaaaaaaaaaaa»aa»«a»aaa—i i -*iaaaaaailJJJJ»JJJJJJJJJJJJJJJ» 

Because Touchmaster opens up the 
home computer. 

First, to the full ran$e of users, even 
the very young. 

Secondly to a whole new style 
of software CTouchware"), which is not 
limited by the keyboard, 

Touchware goes all the way from 
early education packages to sophisticated 
Sraphic prosrams. 

What's more, comparable pads are 
limited because their surface is composed 
of either a bank of switches of finite size or 
carbon tracks laid in a grid. 

Or they need a delicate electronic 
stylus Or they offer a limited working sur- 
face. Touchmaster's full A4 printed surface, 
by comparison, is totally linear. 

It has a resolution of 256 x 256 
points (that's what makes Touchmaster so 
flexible). 




Now anyone can master the home computer 

TpUCHHIAITCR 

^ if^pm For full details, contact Touchmaster Limited, 
^^W ?° S°x 3,_ Port Talbot, West Glamorgan SA13 1 WH, 



or phone Teledata (01) 200 0200 



YOUft COMPUTEA. NOVEMBER T9B4 1«7 












- 


Spectrum Interfac » 


fc 


1 








Drive Un^t l n 




/ \ 








Drive Uni^ 


/ \ 


RSZ^fl^rfadi 3 



Spectrum owners! Imagine what 
great use you could make of all 
these components Rolronics have 
integrated tfiem ail into one 
attractively styled, compact unit. All 
tiie power and convenience or 
floppy disk can now be yours, but at 
a fraction of the cost . 

A complete package 

Wafadrive is extremely 
versatile- Fw major components 
are housed within this one unit - 
the micro interface, two 128K 
drives, RS232 serial and 
Centronics parallel ports. Also 
included in the package are a blank 
wafer and Spectral Wnter - a 
superb word processor program , 
The micro interface forms the nerve 
centre of Vvafadrive, controlling all 
its major functions. The dual drive 
configuration and the ability to 
connect standaid penphera is 
directly provides professional 
system flexibility. All this without a 
mass of separate components and 
vulnerable cables, Waf adrive 
transforms your Spectrum i nto a 
very powerful system .. 

Speed, reliability and 
capacity 

The wafers con ta in an endless 
loop of specialty developed 
magnetic tape driven at high speed 
past a read/write head. The result is 
fast access without data toss 
Three sizes of wafer are available 
with minimum formatted 
capacities of 16K,64K 
and 128K. The 128K 
wafer costs £3,95. 



Data transfer rate is approximately 
2K per second . Access time is 
proportional to capacity. 16K wafers 
are ideal for program development . 
with the larger capacity wafers 
being more suitable for general use 
and archiving of completed 
programs and data Mechanical 
longevity is assured by the use of 
high grade materials throughout 
and full interchangeai)i I i ty between 
machines is guaranteed 

Extensive software 
applications 

Wafadnve provides intelligent 
file hand 1 1 ng and rapid access to 
data. Program development and 
other appl tcations can be 
performed with ease. Start word 
processing immediately with the 
specially developed software 
package included with Wafadrive. 
Or battle with a spectacular 
interactive games program . 
Whatever your mood, you'll find the 
soph isticated Wafadrive software 
challenging and rewarding, Future 
versions of Wafadrive will be 
available for most popular home 
micros, so software back-up will be 
comprehensive. 

For further information 
contact us now for our fu II colour 
brochure. 

ALL-IN-ONE PRICE 
£129.95 tine, vat) 

Ar* t*W* 1 rem al Spec trvm 4es«f&,Gnl tan 
CAtebgvn and SWT rrvni wdet 
**Je e nqu>r«. Micro Dealer (UK) lid. 
29 BurowfiiW, Werwjn Garden C«Y, Herb, 



entro flic&fa terface 



ROTRONKS 



WAFADRIVE 



ftOTROMCS LTD SAHT05H HOUSE. UAffl. BOROUGH tHAttHG ESTATE, WEST 



HrrCOMK ROAD HtGH WCOM&L BUCKS HP1 1 JLBUl |0«4|4i2)«i7 



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BBC MICRO 

- USER SUPPORT - 



10 ISSUES OF BEEBUG MAGAZINE MAILED FREE TO MEMBERS • 30 
EXCITING GAMES AND VISUAL PROGRAMS • 43 SOFTWARE REVIEWS • 33 
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YOUfl COMPUTER. NOVEMBER 196+ 189 



.♦> 






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Challenging, 
sophisticated, 

advanced, 
extra special. 



Be the world's greatest sleuth — in the most advanced and challenging adventure game ever 

For the first time ever, here is an adventure game in which you can talk with intelligent characters, ask them questions 
and argue with their conclusions — all in everyday English sentences. 

Work against time to solve the mystery as you travel about Victorian England. Villains, suspects and witnesses all live 
out their lives in a realistic manner, and you can never be sure of who or what you will find anywhere. You must be alert 
because nobody is above suspicion. 

In "Sherlock', the world of the famous private detective comes vividly to life, Time passes naturally; day turns to night, 
racing towards the inescapable deadline. You must ensure Sherlock has sufficient time for sleep, money to travel on 
public transport and other necessities. And you can rely on Dr. Watson to help you collate information, or gather clues. 

'Sherlock' makes the maximum use possible of the 48K Spectrum and is the result of 15 months' work by a team led by 
programmer Philip Mitchell, the author of The Hobbit' The text and graphics of Sherlock' makes it the most exciting 
and sophisticated adventure game yet devised. 

"Never before have I experienced a game so atmospheric and realistic. I was totally captivated and caught up in this 
most fascinating adventure. The characters are simply amazing. They do lead their own lives. If s all so 
unpredictable." — G. Dempster. Scotland. 

A real adventure! 




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RESPONSE FRAME 



Do you have a problem? Your manua* is 
incomprehensible or you just cannot get the 
hang of that programming trick you tried - 
whatever it is, Tim Hartnell will do his best to 
answer your queries. Please include only one 
question per letter and mark them Response 
Frame". 



STATIC MICRO 

I I am li \cjr\ old and have had 
many problem* with computer*. 
My rural computer wu a ItK 
Spectrum. Thin wnrked well Tor a 
month hull developed keyboard 
trouble And ww relumed far .1 
replacement. The replacement 
wouldn't Save, so was sent back 
fur a refund. With this money. I 
btiu gh t a T I Mf 4a- This was Tound 
to hav* faulty colour, *o wa» 
replaced. Since then, 1 have had 
four more II 99s, all of which 
have developed various fault*, the 
tn«fl %eriou* of which w|| a total 
Una of function — couldn't even 
get the "power on*" light to work, 
A friend <>t my mother's said he 
had heard thai hii»c people 
cannot use computer* because of 
bodily italic electricity. la this 
possible, or have 1 just had bad 
luck? Incidentally . 1 have used a 
friend** computer regularly, 
without any trouble, I hope you 
will answer this, aa I am atlll 
interested in computer* and hope 
to gel an I letlrnii if I Ret a 
positive reply* 
Arklr/te Mdkrmptl, 
Hahfax. 

Shades of The Qroen.1 Yam story, 
Andrew, about slalk electricity seems 
to me to he a* valid a* the feat many 
patents have thai u*in& i computer 
connected lo the TV will somehow 
rum the television Certainly, some 
computer component* cin he 
destroyed by *i*k electricity but thn 
a the Tint time I've heard a claim thai 
evil powers in the operator would 
rendu the computer inoperative 

My experience with Tl 99M* \t ha* 
been all positive. They teem lo work 
reliably — albeit excnmalinf.ly slowlj 
— and ttictvl\ of nunc whn have them 
have repotted no aiwivt failure 
rate. 

The fact that you can use fouj 
ft lend '% computet without causing it 
to self-destruct lugjiciii. to me, that 
there may be problejiB — if Math 
thing* we po«ihlc — in the whine of 
your bouse Unusual electrical surges 
could be, at lean, blowing fiise* — 
which sound* lik-c what happened 
w«h your lourth TI. Hot what it'* 
worth, you might life to thai with an 
electrician ibout ytsur home wiring 
and enquire at the same time 
regarding the liability of ihc power 
iupply in your area Have you tried 
running your friend'} computer H 
your home? 

SPECTRUM BUG? 

■ I thmK ] have found yet 
another bug to the Sinclair 
Spectrum ROM, I was writing a 
simple program in which the User 



enter* the three lengths of the 
■ld» of a triangle. The length of 
the longest «ldc la entered runt, 
followed by the other two. The 
program, then print* a menage 
showing if (he triangle i* a right- 
angled one. When I wait testing 
the program — which 1 was aure 
WAS Correct — I entered the 
numbers fur the 26* 34* 1ft rights 
angled triangle, To my surprise, 
the compuler told me the triangle 
1 had entered waa not a right- 
angled one — which ll is! 1* it mr 
or my Sinclair computer which i\ 
wrong? Here'* the program: 
10 INPUT LONGEST SIDE FIRST* 
20 INPUT "NEXT SIDE B 
30 INPUT "NEXT SIDE' C 
40 IF CT2 + BT2 = A~2 THEN PRINT 

"A RIGHT ANGLED TRIANGLE ' 

PAUSE 1 PAUSE RUN 
SO PRINT "NOT A RIGHT ANGLED 

THIANGLE":PAUSE 1:PAUS£ 

Darrtn FarrHgf, 

Nt Crtehtutr. 

Claims LIU mis Parren, ire heard 
very fiequctuly. The problem lies not 
tn youi Spectrum, but 10 the »j\ 
which jW computer* store number*. 
They ire never stored exactly. Even 
tag IBM K; will inform me that 
85/100 equah 1184449°. Certain 
micro* available un the UK market 
will solemnly inform you that 4/2 does 
rwt equal 2 — be cam e the computer 
More 4/2 as 2,000001. 

The way to te»i what your com- 
putet » really doing, in ihlv and any 
Other program in which you wish lo 
compare the r esulti of falculiiKms, is 
to get the computer to prim out us 
findings ' « . 'ell « i« I'nru C2, ITS, 
A'2 and compare the three. Then, 
instead of looking for in exact match, 
go the computer to look fur i mint- 
mum difference. In your case, line 40 

LD'jtd tCJti 

40 1F AQS«C2 + B'2) - A"2K 0001 
THEN PRINT A RIGHT ANGLED 



HOW GOOD IS MSX? 

d ] have read a lot about MSX 
Basic in the paal few month*. ) 
understand that It it a new 
standard so thai you can run soft- 
wiit written Tor one MSX com- 
puter on another, How well O- 
MVX going fo be accepted in the 
UK? 

Martin Bti*hu>, 
Albany. 

It I COULD rgfi&lur the flilure. 

Martin, 1 would not be writing for 
Your Computer. Sa-Ottc htlOW* 
whether ot not MSX will ever get off 
the ground {"crtainly, Microsoft in 
Amenta, who invented it, are pwhiriR 
foe a to become the *iat*lafd. Mure 



than 50 — at last count — Japanese 
manulactureT* have either embraced 
the standard — or takl the)' mill in due 
course. My guess is that it will gain a 
certain acceptance over ihe next two 
years, so that it run* parallel to the de 
facto standard* we have here *uch as 
Sinclair Bask and BBC Basic. It ha&, I 
believe, liltlc chance of dislodging 
Mwrrosort Basic - a* in PC DOS oft 
the IBM PC - in (be State* ~ 
ahhoush Microsoft and MSX Basics 
tn very, very clove; except for ihc 
graphics and sound. 

The MSX standard is built around 
a ZSOA processor, and Specifics such 
rhms* #■ sprite control in the 
ftraphics, !*ina;lc channel sound, a 
Centronics prmter interface, Atari- 
type ioysitcfc ports, cassette output — 
I20*V2400 baud — and ihiet itraphics 
modes — (*o text M k 24 and 40 * 
24 and one H *ru-tes", which »25ft x 
192. 

So long as you *lkk with one of the 
biggies in the UK - such at the 
Spectrum ot the Beeb — you have 
link chance of buying a machine 
whose support dwindles to nothing in 
the not 18 month* 

CHEAPER BEEB 

B A i the moment, I am saving 
up for an Electron, but I would 
have preferred a BBC Model B. 
Could you please tell me if the 
BBC Model B will be coming 
down to price In the near future? 
S G HatrtbY, 

Ptetam. 

Ose NaUfM know* what thoughts lurk 
in the nund* of t hose at Acorn, but l he 
du nc es of the Btch coming Juwri m 
price seem to me to be very, very ilkn 

BUSINESS 
PROGRAMS 

■ I have a Mc-20 micro and cas- 
sette recorder in Rood working 
order. My penhletn i* lhai I h.nl ,i 
brain stroke (wo years ago which 
has unpaired my memory and 
manual dexterity, 1 find ihe 

manual entry of a program Very 
difficult and boring. I wan I a 
micro offering software with 
simple home and business 
accounting programs, nut games. 
What do you advise, since I am 
prepared to sell my Vtc-20? 
K P Stark, 
fFatfixd 

First of all. be prepared for a grave 
disappointment if you try 10 sell your 
The money you would get for 
h will be very, very utile compared to 
what you paid for n, You do not 
mention how much you wish lo spend 
on a compuler which makes giving 
you speafii. adviLC rairly difficult 1 
imagine that a computer whkb allow* 
use of discs, rather than a cassette 
recorder would be easier to use and 
therefore suggest you could consider s 
BBC Micro with discs This, how- 
ever, is not cheap. 

Before you. do anything, 1 would 
suggest you look through the advert, 
isements in this issue of Your 



{j>ntpm/T and call a Commodore 
dealer, describe your software rcqiurc< 
ments, and see if you can get anything 
suitable for your Vic-20, 

TAPE TO DISC 

ft) l have recently purchased a 
Curnana disc drisr for my Bill I 
Micro, and would tike to save 
urogram* on disc I mm tape — 
Basic mad machine coda), t h.ivc 
little knowledge of machine code 
and assembler. Could you tell me 

how it could be doner 
P A Jitmifim, 
Ji>£iflw IC'dlcf, 
Surrey. 

Maky PEOt-Lt, including myself, 

WOUld lOVe IO know hOW |D do llm 

However, we dare not risk the wrath 
— ard lli - lawyer* — from Acorn. 
tn a ",aztnc printed a routine Rh 
1 M 'iif: the locks on cassette software 
trom Acortuoft, so n could be rr»ni» 
ferred to disc, tad got hit with a 
£70,00(1 fine fot their trouble. 

PRINTER ADVICE 

■ Can you advise of a printer 
with a superior width of presenta- 
tion to the / \ printer? 

J A Jena, 

W Skaltvurne Rut, 

Camhtriry, 

Tumi ami a number of interfaces 
now available to allow you to hook a 
"'teal" printer to your Spectrum 
However, as far as I know, they da 
not offer a "superior width". How- 
ever. I have printed your address in 
full so any manufacturer who thinks 
be can help can get in touch with you 
direct lv 



In an earlier issue of Your 
Computer, I gave a way ol 
adding a line numbered zero 
lo a Spec I rum program, Mike 
'Donne 1 1 of Palacefields, 
Runcorn. Cheshire, has sent 
me a molhod ol adding lino 
zero which ne &ays has two 
advantages, One, it is easier 
lhan the method I outlined, 
and two, il can be removed. 
Hera's Mike routine: 

First enter your line number, 
as 1 REM . . . 
Next POKE 23756,0 
Presa Enter ihen List 

To remove ihe line: 
POKE 23756,1 
Press Enter and bst 

Thanks lor this routine, 
Mike, which I noie you 
acknowledge as having been 
shown to you ai your local 
compuler club, I agree that it 
is simpler than my method, 
but Ihe very fact thai It can 
be removed makes lis inclu- 
sion rather pointless, I waa 
trying to give a way to put a 
copyright notice within a 
program which could not be 
removed. 



YOUR COMPUTER NOVEMBER 1981 1 73 











Your First 

Commodore 64 

Program 

R Zokt £ 7.95 



You con lecrn lowriie 
mnpl p program* 
wilhos/f any prior 
kna-* ledge of molhe- 
malics or compu'er!! 
Guided by colorful 
'ilu>ifai<on»arHJ itep- 
by A(ep intrruchortf , 
yau'il"b* eonilruering 
program* w»1Tiin an 
hour or (we, 

ISBN :0-8958B- 172-1. 
7**11*. IB? pp, 

.lluttr cried 



Your Second 
Commodore 64 
Progrom 

G lippmon L O-Vj 



also available for 
WC J0,AH>lEh\ 

ATARI. ISM. TI99.'4A 






TVio many colorful 
■ ilu*HQl>ons inlhn 
book make iF a deli ghl 
for ehild^n Qrtd fun 
for adult* who ore 
mattering BASIC 
programming. 

A sequel FD Your finl 
Commodor* 64 
Program. 1+i(j book 
follows (he wrrr 
ftiorough, delated 
approach arwl brings 
you ro*« n#»t l«v*t 

of programming sfciil. 
W.ihrheie&ASlC 
larnjuog* technique*, 
you' 1 1 icon be C r nalkog 
your Own a-ppl I - 
caliansl 

l5SN:iV8?58B-1»'7. 
7**11*, 340 pp, 
luM 



alto avai labl* for 
APKEII 




ATARI BASIC 
Programs 
irr Minutes 

Si R Iron £ 8.95 



You Cfln Lrtettiil procn. 
col mi of program) 
•vnhout any pniar 
knowledge of BASCl 

App '.canon evomples 
o'fl fokcin from a wide 
variety of fields, 
including but m*M, 
hOWv* management. 
and 1 real esfaFe 
Juii type them in and 
**lf Ve f*ody to runf 

ISBN; Q-£tt88-M3-S, 
6"!f?-,1?tipp r 



Kids' Guide 
loth* 

Commodore 64 

M DeJaflflhe/CEathO'l 

£7.95 



Colorful i|.!w»iro*ietni 
and o fnervd ry robot 
highlight th.t guide to 
l ho Commodore' 64 
forkid.flll 
TKe hands-on 
approach facmiret 
ihoM , eaiy lessor^ 
and the tp.rol binding 
moke* it <d«0> (or DM 
fight at iho computer 
The engaging exer- 
cises are fufi of lu'pfi' 
Mi and discoveries 
Byiheendofthebocik. 
kids will be 
programming ih*rr 
Own guessing games . 
J O' I purpose* iHank- 
you noloo, mulii- 
colored picture*, and 
limptpammaiiDfT Thf 
authors ore elemen- 
tary school teochef* 
«n hS (ev+rol yeon of 
C0<npulf>r evper ience 

l&N:D.8958B-lBS-8 r 
9x7M«3pp. 

ttljttcaled 



Graphics 
Guide to the 
Commodore 64 

Chori«Pten £9.95 



Ttniooij'to urnle* 
viand book is Hie tir-it 
to ons-wer *e need for 
a Commodo-rp-ipct: ■ 
Kcgrophici guide, It 
will appeal la anyone 
who wonts "o matter 
eh* Commodore W» 
powerful graphics 
features You'll loom 
la mpvt i mages across 
me screen. buiHyour 
awn character sets, 
and croale imprewiwt 
heodlinetond detailed 
pictures On !hr Screen 
A lull rotor collection 
of screen ditptar* it 
-n<luded,OJwflllaiin 
•Jrutsiont On how to 
create your own video 
games 

lSflN : 0.B95W. 135,1, 

7-.9-,2o1pp, 

luetnBltd 



Programming 
the 6809 
ZeU/Urtw* Ell. 95 



Gel more am of you* 
fi«W mitropf oteUO' 
- mil boot ■* eh«k 
lull ol pregramming 

tricki. \Q ih(rw you 
how, Slorl w>rh the 
basics oF assembly 
longwooo programm- 
ing, ono* go on to 
gndertlond regiiteft 
Ond bvMl, subrouti- 
nes, me 6809 rnslru*. 

tion f*t, oddfOHl ng 

mode*, I/O h-e&hm- 

Ques Qnd dev>cot, 

dola srrirclvret, gnd 
ul*fwl opp4itcihiorii 
Give your 680? pro- 
ceLior 1 6-hiP perfor- 
mance wrth Q ■ kji" 

economy. No prior 
programming k now- 

ledg« is required 
ISBN. 89588-07B-4, 
6**9'. 362 pp, 

ilWti'oied 



The 

Commodore 64> 
VIC 20 BASIC 
Handbook 

D. Htrgert £ 9,95 



In "tin diCSOruwY* 
tiyfo handbook, you'll 
find clear oVicr.pncwn 

and •templtrf of aoch 

word in ihe 

Commodore 44/ 

VIC- 20 BASIC voto- 

bulaif 

Th* proper tyniovof 

every keyword and 

function n nxploined 
carefully and 
ihoravghly >n iscny-la- 
undnrtlond English 
Short example 
programs I Hut Hole ihe 
correct us* of eodH 
<ommond, and 
ipecral ndei provide 
irrtlghl into sublfeties. 
ortd SKtro features of 
Commodore 64/ 
VrC.20 BASIC. 

BUN 089588-116 -0. 

6-*9\185pp ( 

■ilvftraled 



SYBEX COMPUTER BOOKS KEEP YOU UP ON HOW 
TO GET THE MOST OUT OF YOUR COMPUTER. 

SYBEX Computer Books are available through most leading 
bookshop and your local computer store. Ask for them ! Our 
books are also available from COMPUTER BOOKSHOP, 
Birmingham, W.K SMITH, JOHN MENZIES and BOOTS. 
In case of difficulty contact us directly, enclosing your check 
or money order (include 80p for postage and packing), 






SYBEX Ltd. 

Unit 4. Bourne Industrial Estate 
Crayford Kent DA1 4BU 
Tel: Crayiord (0322) 57717 




SOFTWARE FILE 



Software File gives you the opportunity to have your programs, 
ideas and discoveries published. We will accept contributions for 
any home computer provided they are submitted to Your Computer 
exclusively. Please double-check your programs and specify the 
memory they require before sending them, preferably on cassette. 
We pay between £6 and £36 for contributions published. 



Karate! 

Alexis and 
Mario Chiotis, 
Fincntey, 
London N12. 



lm-x>- 



Karate IS a two-player game based on the 
Japanese form of martial an, for the Commo- 
dore 64, 

Using the multicolour sprite facility On the 
64, we have created many of the clement* of 
the real thing for example punching, kicking 
etc., without the pain. To pi ay you will need 
two joysticks and quite a bit of skill. 

When the program is run von will be 
allowed to choose the colour or your Karate 
suit. This is done using Ft and FJ, To 
continue, ptess F7. You will then be asked 
how long the fight will last, and also the 
names of the players. 



The next scene is where the fighting takes 
place. The two men stand on (heir lines, bow, 
and ait then ready to fight. By using the 
combination of joystick movements, shown on 
the chart, some complicated and exciting 
fights can be achieved. 

After a little practice, you will soon master 
these techniques and produce some startling 
effects. 

Finally, the winner will be displayed 
showing offhis skills by attacking a brick wall. 

If you would like a copy of Karate, just send 
£3.50 including post and packaging to: Karate 
Offer, 7 Torrington Grove, Finchky, London 
N12 9-NA. 

Joystick port one (controls player 2}. 
North: Jumps in the air and kicks. 
North-west: Does a high kick towards 
opponent's chest. 
Wast: Moves player two forward. 
Fire: Kicks towards Opponent's stomach. 



West and Fire: Blocks Oncoming punches and 
high kicks. 

South- Wosi: Sweeps opponent's legs away- 
South: Ducks. Csn also be used to pull 
opponent's legs sway. 
East: Steps back. 
East and Fire; Punches. 

Joystick Port two (controls player I). 
North: Jumps and does a high kick. 
North-east: Does a high kick towards 
opponent's chest. 
East: Moves player 1 forward. 
East and Fire: Blocks oncoming ponchos and 
high kicks. 

South-east: Sweeps opponent's legs away- 
South: Ducks. Can also bo used to pull 
opponent's legs away. 
West: Steps back. 
West and Fire: Punches. 

Variables. 

CI: Colour of player one's karate suit, 

C2; Colour of player two's karate suit. 

J1; Peek ol joystick port one. 

J2: Peek ol joystick port two. 

PI: Player 1 score. 

P2: Player 2 scoie. 

SI: Sprite 1, i.e.. 2040. 

S2; Spnta 2, !.♦., 2041. 

T*: Time. 



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V OUH C OM PU T E R . NO VI MBfcR ■ 9 8-1 175 



■ta 



SOFTWARE FILE 



(conttrrued from previous pag&) 



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(ttTr* * * * * * * 



Painter 

SaiTy Q'Reitty, 

Ketls, 

County MeBth, 

Ireland, 



z&mmn 



Having just graih a tfo ihmi college with 

an arts degree you find the permissive world 
totally engrossed in watching junior blasting 
the buR-cyed-bouncers before they mi hit cat 
and kill his grandmother, or vice versa, Theie 
seem* no place Tor coniuiciuious objectors like 
you, so despondently you don the disguise of 
an inconspicuous paint-brush and venture out 
to make your fortune in the mental post or 
exterior decora lor. 

For those cf you who have never had she 
experience of being a paint-brush I shall fry to 



dcscrilx: the feeling. You are situated on the 
will of a house and may move anywhere you 
wish, painting as you go. Inevitably there are 
i collection of hazards to be avoided and, 
equally inevitably, bonuses to be collected. 

[ ■L-mh can also be found in the form of a dry 
paint brush. To avoid this, paint-pots are 
placed about the wall, running over these will 
replenish the linear scale at the bottom of the 
screen. About one minute of diligent swishing 
it enough to complete a wall and then be 
prepared for . . . Oh its all in the program 
anyhow. 

Key in the program as listed even ihough 
the numbering appears unbearably erratic. 
Then save ii under your favourite file name 
ur>inp the suffix Line 8000 so as to display ihe 
instructions on loading. 




l 

X9 C'EF FN r I'D J-JNT *RNr>+r 

90 :-: re ie2 

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let pnnt«p*int-ptmn 

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(continued on page 18V 



176 ¥OUH COMPUTER. NOVEMBER 19&* 




FORGET SOFTWARE 
THINK TOUCHWARE 



o CJ o L 




Graphics Editor 



An expanding range of totally new 
Touchware is now available for Touchmaster 
(software houses thoughout the UK and 
Europe are continuously adding to it). Due to 
the enhanced concept behind both 
Touchmaster and its Touchware, they com- 
bine to expand your use of the computer 
- dramatically and easily. 

Experience the expanding 
range of Touchware - Arcade Games, 
Graphics packages, early education prosrams, 
Synthesiser, Board Games. 

They all take on a new dimension with 
Touchmaster - some examples are shown 
above 

But they only hint at whet you 
can do when you come to write your own 
programs with Touchmaster 



Simply Simon 

Complete and post the coupon for more 
details, Or telephone Teledata on 01-200 0200. 

Now anyone can master the home computer 

TOUCHfflASTSR 

^*5P Touchmaster Limited, PO Box 3, 
^^F Port Talbot, West Glamorgan SAt3 1WK 



r 



More details on Touchmaster and Touchware please 



Name 

Adtirea. 



-PottCoOe. 



VCti 



They came fro 
the lost city of 





t of the deseif 
cher and disco 






■M 




The Walled City d 
a thousand, thousand year? 
Great Desert inhabited by only the deadly Ants 
who have made it their home. 

Then one day He and She arrive to play their 
games through the wind-swept streets, ousting 
the Ants from their exclusive occupation. 

But the City seems to have a presence, a huge 
brooding entity which hangs over the buildings 
and in some mysterious way controls the destiny 
of those below ... 



d Commodore 6MJmgM 

available from 




Quicksitva Mall Order, P.O, Box 6 f Wimbome. Dorset BA21 7PY. Jel. (0202) 891744 

■Km twH #li*lW P5 _J(^^^j^ ' 

WHSMITH t35r 



woowormt ir-^ ***'•« 



riflin ml t#*ci«M i 



r 



COMMODORE 64 
Turbo load 




if% 



Snowman 









Kf'j 



COMMODORE 64 
Turbo load £795 each 



AGAME OF STRATEGY THAT WILLTE5T 
YOUR flfNDTO THE LIMIT! 



The Evil Castle Lord has 
trapped the members of the 
brotherhood in his castle. 
Only you, the Grand Master, 
can rescue them, but to do 
this you must vault the 
castle walls and unlock their 
cells.,. 





All titles available from Quicksilva Mail Order, PO Box6. Wimbome Dorset BA21 7PYTe1 (0202) 891744. 



For The First Time Ever 




* fully editable 

* synthesizer 

pectrum48k 



lortiy 

6.95 



SPACE MISSUS COMMAND 

Ifjgwaves of missiles 
and only you between the earth 
and destruction. 

ZX Spectrum 48k 5.! 



MUSI: 

* 3 channel composer 

* professional musical notation 

* correct phrasing 

* 5000 notes ^_ 

* mu^jcsheet^crvtled across 
screen or printer 



Available from your software dealer 



Dealer enquiries contact telex^ 
Germany 941 



PROFJSOFT GMBH, SUTTHAUSER STRAITE 50/52, 45QQ-&SNABRUECK, WEST GERMAN: 



— - 



SOFTWARE FILE 



front inudd from page ITS) 



t no 



'.h«)f t vour (M 
peslt lent b*ti 

h And i wort on at*' 

. * eh* t #&fia 3 w jr. 



replenish .:■_•- - 

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the svee ,y ii Li 



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TAB IT. ■■$- 



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print ar 



r * crick . 

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rtac*ing 

:hT 



• Tht p ind old 
mntji to cow 



Ul cash - 

• t*94 

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LE^ -.;t 5 . t 
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asaa sestqre at 

TO U •"■ 

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B52B PAUSE 

9000 DATA 0* 

112. lfiO 

9010 E-AT* 170,85-1,136,24 ,< 

9020 C-ATR 5 - ii .1 

003. £A.« « ,S , 126, -1 I 

4e*e c«t« 1=^.1 i ,b. -a, i 

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90 to DfcTA ;; s ia,ea,3 

9070 OAT A -1 i£' ,97 

9090 DATA ©7 H s S7,- 



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FOP rt«2£?2l TO £3231 I« 

AND (1141! 32. 1 -.- 
+1) 32"' THEN POKE ft,lM £=£ 
2 fs*0 
:" " ■- THEN ~E T 

.";jtiss instructions by 
sr«tt:n} iny Ley 

NEXT ■ 
RETUf 



IChicks 

i Stuart Smaiiey, 
Setiny. 
North Yorkshire. 



i~- 



CHICKS IS for a model li BBC computer and 
involves directing a man about the screen hy 
the use oftheZ, X — left, right — and, : ; / for 
up, down. The idea is to herd a flock of chicks 
into a chicken coop. The chicks always move 



away from the man but the man has moves at 
three times their speed. 

The game can be speeded up by changing 
ihe muUipland on line 140 ar even by deleting 
the whole line. 



IOREW <C> STUART SHALLEY. 1TO4 

2003*0 

30DIH chlcfcftxXCS) .chickavV.lBt 

*o«ooe 7 

30PftOCdif4ieultv 
60H0DEI 

70PftOCiniti.lL. 
BOREPEAT 
VOPflOCajov*' «Mri 

toocauMti 

l 1 OPft INT TAB IcoopKl- 1 .coopvl- 1 J CHR* I 30+CHR* 1 31 +CHR* I 3 
| 

120CQLOUR3 

1 30PR INT TAB (coopul- 1 ,coopyX> CUR* 133+CHRtl 34 *CHR» I 33 

l*OFORd»l*Y»l TO (7-flockXl»30iMEXT 

ISOPNOGacH* 

I tOPROCchlckm 
I 70PR0C«ov« 
lOOUHTlL FALSI 

lOOOftfmOGae-M 

I010XI-XX*(II*EY(-9R> AND XX>P> - < INKEY ( -67) AND l£<3? 

!(>ZOVX-Vlt+(lNKEV<-73> AND ¥X>0) -f INKEY<- 1031 AND VX<2 

1030COLOUR1 

1 040PR I NT T AB < JtX , VX ) CHR* 1 28 

I030IF oldKXOXX OR oldyXOYX THEN PRlNTTAB (ol dxX.nld 
Vt>" " 
1 060ol d K Tt«XI » Ol d WX- YX 
I070GNOPROC 
20OOD£PPROCch i eki 
2010SOUNO1 , 1 ,200,1 
ZOTOFQRIX-l TO *lockH 

7030AX-chict(aH7.(IX) : BX-chi ck»V^ 1 1 X) 
204OPROC«jv» chicki 
2030PRINTTAB(AX,BXI- " 
2O60C0LOUR2 

?070PfiIMTTA0(ct>lck«KX<IXJ,chitk«yXtIXHchlck* 
2080IFchlck*KX(Ii)-cocipKX AND chitc»e»yX t IX)"CO*WvX TK 
I N f=ftOCttKjp*d 
20^0NE)fT 
210QCNPPR0C 

30O0DEFPftOC«> v » chick* 

3O10IF XX>chick»t<X4lX) THEN crticlt*KX< IX* -chlckmHXtlX) 
l:chi[-k«-CHfl*]7<) ELSE IF XI< chl e»c*jeXUX> THEN chichi. 
X< 1*1 -chic k»xV.M7,}»l tchick*-CH»«1 li 

3020IF YX>chlckHvX<IX) TttEN chick»vX * 17.) -ehi ck»vX( IXl 
-1 ELSE IF YX-<chict(svX«IX) THEN cMcfc»yX< IX)-chicfc»vX< 
IX)«J 

3O30IF chickSKX(IX)-. 1 THEN chi ckmxX ( 17.1 -RN0<4) ELSE I 
F ehick**X(IX>iJ7 THEN chtckuXi t X) -33*RMDH» 

3040 IF Chick*vX<T7,)- J TtCN chl ckmyX< I Xi »RND (4 i ELSE I 
F cMcfcayXUX) «20 TV4EH chicic-YX ( IX)-2«*W*0C4) 
3O3OEN0PRDC 
4000DEF^ftOCcciop»d 
401 Of 1 oc hX*t 1 ackX- 1 

4020 IF flDckX-0 THEN PROCmucc»»»i ENOPROC ELSE FOR hu 
ndX-SO TO ISO STEP POi SOUND 1 , -1 5. aoundV. , 1 i BOUND 2,-|5 
, koundX . 1 1 SOUND 3 , • 13,«oundX. 1 1 NEXT 
4030F0F JX-l>: TO flockX 
4O*0chic»cwieX (JXJ -chick«xX(JX*l ) 
4030chit-k«vX(JX)>chickmvX(JX«-l ) 
4040NEYT 
4070IX-JX 



4000CNDmOC 

SOOODFFPftOC«ucc««« 

50lOti«wX-TIhE OIV tOO 

3020*cor »X-25«d» ♦■» t cut t vX-t* -»X 

303Odi # Heul tvX-di M i. cut tvl* l 

S040IF dlfftcutt:vX>7 tktN diMicultvX-/ 

SObOPRlNTTABO.B) -CONBRATULATIONBr ' " 
5070PfttNTTABtO,l2)-You c*pti*-«d all th» chick*" 
SOflOIF tccritK) THEN PRINT* ih "itlHtXl" HCOPdt" ELSE 
PRINT "But took too lono'" 
3090PR1NT "You «cor*d "i»cor*X 

3 tOCrf lockX-di *1 1 cut tvX 

31 lO IF «cor»l>eX THEN BX-«cor*Xt PRINT ' '"Vou hav» th« 
hiqh«t Ktrt 1 ' 

aiaOrtWCfanff* 

31 30PROCI nl t i *1 1 ■• 

S140PRIMT' ' "PREBS <*p.**> CONTINUE'' 

3I30REPEAT UNTIL l»CEV<-^-f) 

S160CL6 

St70EH0PROC 

iOOODEFPROCd i Hirultv 

6OI0F0RIX-O TO 9 

6020F0RJX-0 TO 39 STEP 2 

603OPft£NTTA8(JX, IX)CHR*(i2»+R*aH7))+0«H37 

MMOMKXT 

AOSOSOUNDI,-15,IX»10. 1 

BO&ONEKT 

60 70PR I NT T AB ( 1 3 , 2 ) CHR* 1 32+CHR* 1 57+CHR* 1 4 1 *0*» 1 33* " CM 
ICKS" 

60eCrf^INTTA0U3.3)CHR«l3Z+O*»«l37*CHR*«41*C>««l33+"CM 
ICKS" 

6O90PRIWTTA8<3,6)CHR4t34+C*B4*l-r7+CHR»l32*' i *C) STUART 
SHALLEY, 1904" 

6tOOPR(NTTAB<0,U> H Alt tho b*bv chick* hiv> mcipk) * 
nd your job I* to rfturn th«a to th« coop, " 

6ilOPRINT"-To oo thi» you control a **<n who mvh by 

4I20FRINT-I -OP / -DONN I -LEFT JC-filOHT- 
6l30PRINT'"Tho chick* i!m*vi hvi away fro* VOU. " 
6140PRINT-PRE3S KEYS 1-3 FOR LEVEL OF DIFFICULTY" 
6ISOREFEAT A4»G*fT*:UNT IL tNSTP( " 12345", A#> 
6160dlf f tcultyX-VAL(A+>+2 
6 1 70ENDFROC 
7000DeFPftOC< mnimrm 
701OF0R IX- I TO S 

T020F0R *oundX-I0 TO ISO STEP I 3 
703DSOUND SiSOl.-lS.aaundX,! 
7O40BOUND b202. - 13, *OundX , 1 
7OSOSOUN0 L203.-13,*oundX,l 
706ONEXT 
7O704CXT 

70BOFOR aoundX-130 TO IO STEP -15 
709CSOUND St201,-I3,*oundl,l 
7tOO6OUN0 |.202.-l3.*DtJr>dK,l 
. .OSOUND lZQ3,-lS,*oundX,l 
7iaOMDtT 
7f30ENOPROC 
BOOOOEFPftCCl r>» tiiliw 
aOlOFORIX-l TO Q 
0020c h i c St*HX ( I X ) -RND 1 30 ) 
B03Ochi ck*yX I IX i -RNO 1 30> 
BO40NEXT 

(continued on page 183) 



YOUR COMPUTER, NOVEMBER 1 9S4 181 



We're as enthusiastic 
about computers as you are. 



1 1 
1 


f 1 


^1 






CtfL 





t 



? * * # t 



• • f 




# i I 



9 # f 



If you use computers at work or at home, Practical Computing magazine is 
essential reading. Every month it takes a long hard look at the most important issues 
in computing. It's informative, very useful and immensely readable. 

It reviews both hardware and software, discusses the latest 
innovations and helps you get the most out of all the popular computers. 

It's always entertaining, never dull. And it's at your newsagent now. lit UJOrkJH home 




102 VOUH COMPUTER NOVEMBER 1984 



SOFTWARE FILE 



(continued from page TBI} 

80S0UTXJ23,l28.24.<>0.24,4SO,17£,219.2*;,54 
SO&OVDU23 , 1 79, Sfc, I 20 . 74 , 1 4 , M , 3 1 , 1 4 , 1 7 
B07OVOU23. 130,0,0,0,0. I ,3,7, 13 
B080V0U23 , i 7 1 ^ 16,36, 1 74 , 754,733, TSS ,333, 
B090VUU?,.'; , I 32, 0, 0.0.0,0. 12H, 192,224 
H IOOWDU23 ,1 33, 7, 7, 7,7, 7, 7, 7, 7 

BL10WOU23, 134,233,235, IV? , 131, 131 , 131 , I 31 , 131 
e 1 20VDU23 , 1 33, 192, 1 92, 192 , 1 92, 192 , 1 92, 192 , 1 92 
Bl TOVBU23, 134, 29,30 ,24 , 1 12 , 248 , 240, 1 1 2 , 1 44 



6 1 40VDU23 | 8202 i t Ol O i 

0L3Oe*V£LOPE 1 ,1 ,5,3,-10,30,30,30,30,0,0,1,100,100 

eiAOnockX-dlflidijltyX 

Bl70cnick*-CHF*129 

eieooi dK x- ioi oi uvx- 1 o 

819OXX-I0I YX-lO 

B200cocHPttX-RND<20> * I O: cootJvV.-RND ( 15J 4-10 

B2lOTIHE**0 

B22OENDPR0C 



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13* PRINT *" * i. 
133 JiE'T F 
1 138 .r L -8 
137 _E _ z=: 
13fi i^ 
13 w RETURN 

1806 G03UB LE 

1818 print p ~ g ,a, scope fleec c* 

5TLC £hu.-5 H11J #»K ~" £ 10-i_£>. 

<3TRl 5' QPE' , . iCO F£ AT ? 1 o , L. *~ 
8, 25. ■BSeCBS -0 7*8PiLi 

RNO BALL* 

1811 ppikt -- "»A*^flT u*; 

■Z+l '■L.B" .-£.1+1 'Wm • rtT '-• 

L81S PftltJT AT lfl.flj' ",AT £6,8 



Castles of Carmain 



ANGLE OF ELE ! ,' 



jr "ai" 9 ~m 

620PPINT «- ,- | 

<•* An£ E<*5i AT 

£ ■ ■» 



5^ •■£'- * 
r;a ■ . . 






•5 *£: 



21,6 

BT 
AT IOH > 
1036 INPUT E 
1633 PRINT AT £." 

+ i 
m AN 

5' 

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late AT 2 e 

OH BAl. 
16S8 INPUT 3 
1868 PRINT *»■■■ 2 
5P5CD» c 

1870 PRINT ftT A.O 

1686 IF IN«£ s 

58 

1600 FOR F*0 






Jofjn Wood. 
Wednesbury, 
West Midlands. 



This is a program Tor ihc 16K ZX 81 called 
iht CasllnofCariiuim. All rhc castles must be 
destroyed by typing in the angle or elevation, 
followed by ihc velocity of (he cannon ball, 

The castles appear randomly on each game 
but are always possible to hit. The cave is also 
I drawn randomly. 



e 16 men goto : 

3P5E0 OF CANN 

P "ELevATION.' B 

PRfSf ""F- ■ 
■F' TH5N GOTO 1C 






— — 



"- 1 
1186 PRINT PT « .' 
L2M ICTJCT W 
Itl6 V6 1 " ■ - • :- •' 130' 

1£26 ^£T ■ =z~~zZ'> "I- 5 ; 
IS 3fl *0P f,o -;, , if 

i£4f _e~ ; - tF-ie+F*' 

1£56 I" <4Pi3?C6 THCW SO'O 1*66 



lAOfl 

:;,v 

PE 

; j-E 

£6113 
£620 

20BC 

3626 
5630 
38*8 

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IF 5CORE -I t^en i.g' 



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If m»fj= B" -"En boto £ 

pip ■•: ~: 2i 

PRINT TAB - jE.. 60KE" 
F 

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■ >> £8 

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12 70 PL I" .81 

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1300 I F I- ^ THEN ,- 



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13£C NIXT ■ 

1408 ^ET BMU.S*8«LL5-1 

148a IP *±* ~~?c T i£s ::-; .. 

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14.28 !■ 1-5 ;= :»0 *-£ ■ -£T _C»w 

li^C if ;*= :s .»ff TriEti PFIN - " * T 

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'-5 balls desce 



PRINT NEULlt 



5033 I e 

T I 9632 

^*iO ILI 
0058 RET.^ 



CMR8 112- TM11 



Subhunt 

Mark Stewart. 

Balerno, 

Edinburgh. 






St/BHUNl IS Vl'Hl [TEN n\ machine code jnd it 
runs on i he Otic 1 or Aimro 1 6K or 48K. The 



Aimos version has no sound. 

The first program enables you to type in the 
code — program 2. Program J is the Hasic 
com roller program. 

Ynu have lo guide a frogman through 
enemy waicrs to plant mines on the hulls of 
>hips. The enemy has laid mines which you 



have to avoid and have filled the waters with 
mm jnt icliyfish and cloned sharks. Use A for 
up. / for down and space bar to plant a mine. 

48 K owners must add: 
4 POKE B960.7& DOKE 8961. 4 A300 

E can supply it on tassctic for £3. Send J 
cheque to Mark Stewart, 1 2 Whitclea Road. 



Program i. 



Program 2, 



: n S 

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(continued on next page) 



r OUft COMPUTER. NOVEMBER 1 9&* 1 63 



SOFTWARE FILE 



(conttrmoQ from previous page) 



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BjOTMia 



Swoosh 

L IV Betteridge. 

CoirtB, 

Lancashire. 



Swoosh runs on a Vic-20 with a. joystick and 




3K memory expjniion. If more memory i> i 

added such as a I6K then the following mus-t 

\j$ entered first. 

POKE641.0;POKE642.4;POKES43,0 
POK£64*j , 30 : PO K E6 48.30 : SV 364334 
The proprjni ciimcs in two pan*, the firii 

htinp (he instructions. This part also doubles ! 



the screen size to a JO by l-i display This 
program should be entered ftn.1 otherwise the 
second part will nol run. The second part 
contains the i;,irne which is as fallow*: 

The object is 10 fly your glider to pick up 

the bombs from the middle mountain ind 

(continued Oft page 18S) 



184 YOU* COMPUTER NOVEMBER 1984 




THEROTRONICS 

DR2301 COMPUTER/ 

AUDIO CASSETTE 

RECORDER 

The RotromcsDR 2301 has 
alt the facilities you would 
expect of a quality audio 
recorder and also wortcs 
perfect ly with the VIC 20 and 
CBM 64 computers without 
any fiddly separate boxes or 
adaptors, Simply connect 
theDR230l directly with your 
Commodore computer via 




the lead supplied and you are 
ready to Start. The built-in 
i nte rf ace ci rcu itry e rtsu res 
that SAVEing and LOADlng 
is completely reliable -even 
when using commercially 
produced software. The 
DR2301 also allows the 



com puter to sense wh e n the 
PLAY key has been depressed. 

Additional features are 
auto-stop, tape counter, in- 
built microphone and 
foldaway carrying handle. 
TheDR230t is also compat- 
ible wi tti the ZX81 . S pec t ru m 



and many other popular home 
computers. 

The OR 2301 will take Its 
power from the computer 
(Commodore only), mains 
adaptor (supplied) or internal 
batteries. Each unit carries a 
full 12 month guarantee. 



Su perb micro accessories 

from Rotronics 



THE ROTRONICS 
PORTABLE CASE 

Here is the ideal portable 
work station tor home, 
school or work. Specially 
made for most home micro- 
computers, it contains your 
ZX6l,Spectrum,VlC20or 
CBM64 within a smart exec- 
utive style case with remov- 
able lid for convenience inuse. 

The individually tailored 
foam insert securely 
protects your micro and 
cassette recorder (C2N or 
DR2301) during transit. 
Additional storage space in 
the lid holds manuals and up 
to twenty cassettes. A 
seal pet is provided to modify 
the insert for expansion 
units and an alternative 




insert can be supplied if you 
change your hardware in the 
future. The case is also avail- 
able with uncut foam inserts. 

All components remain 
hilly operational within the 
case via inter-connections 
routed between the double 
layers of foam, so there are 
no unsightly leads. 

The case has been 
designed for easy use with 
each component positioned 
for conven tent operati o n. 
The overall dimensions are 
138mm x 725mm x 363mm. 
ONLY £3449 (p p C 2- 50) 



L ^^H ililtkZ^^llirk- *«.******* ,^ha> JIH 


^^^^^ z* 1 *^ ^^k 





ORDER FORM 



Please send (enter as appropriate) 
Romanics Computer 'Audo Cassette 

RecofOoMsiaiC36 95each(in<: p ( p> _ 
Rolwcs Portable Caw at £36 99 Mch 

tint E2.50 p + p)tor ZXBVSpectrum? 

VIC 20 with C2N/0R2301' CBM 64 

with C2N'DR230t V Uncut foam* 
Trpto Enquirwi Welcome 

□ l«nciO*# • -th#qu*'PO* To* I . mad* p*y*bl« lOSHT 

1 Ottmmy Atce** Bircl»yc#fd - iccounl no 

Li 



Sand Id (no *t«np Evqunwd) 
SMT,FnCEP04T,OF*«f>i Norton, 
Tn*c«*t«, Northman. NM1 2 *BO 



121 
4«y* lor MlnM* 




I 

I 

I 



stvu 






i *^m i^TM -Bra a^B ri^H -■*» r>^B t^B i^tm i^n 4 




A 1 00k BBC-drive for £99 + VAT 



We've done it! We Ve built a mass 
storage system for your BBC Micro 
with the power and convenience of a 
floppy disk drive, but at a fraction the 
■ price. Get to know PHLOOPY, the 
remarkable new 100k drive that costs 
only £99 plus VAT, and a further £26 
plus VAT for the interface to your BBC, 
operating system and connecting cables. 

How PHLOOPY does it 

PHLOOPY does not use disks to 
store data, but a 12-foot loop of 
professional - quality quarter-inch 
magnetic tape contained in a robust 
cartridge. The drive has only one 
moving part, the motor which drives 
the tape loop - hence the low price and 
high reliability. As the loop is driven 
round, each file of data it contains 
passes across the magnetic head which 
reads it or writes to it. Other people 
have produced tape loop micro- drives , 

_ _ but they've not been 

^^^^^^^^ very reliable, Thev 
^^^^^^ lacked PHLOOPY's 

special secret. 





PHLOOPY's special secret 



The heart of the invention 
is a brilhandy designed 
"byte- wide" magnetic head, 
made by Phi Magnetronics who build 
multi-track heads for professional use. 
PHLOOPY's head records and reads 
nine tracks across the width of a quarter- 
inch tape. That means the tape loop can 
be much shorter, so the typical time to 
access a file is reduced to a mere 3 
seconds. If you're used to waiting for a 
cassette tape to trundle programs into 
your BBC, you'll be amazed at 
PHLOOPY' s performance. 

Getting it right every time 

In addition, we've included a 
feature we know you will appreciate. 
PHLOOPY has full error detection 
and correction, so vou can be certain 
you will get back what was originally 
written onto the tape. 

Talking to your PHLOOPY 

PHLOOPY's own software, 
contained in ROM, responds to 
standard BBC filing system and Basic 
commands. Most programs written to 
run on disk or cassette should run on 
PHLOOPY without problem. 

And because PHLOOPY contains 
its own intelligent microprocessor - a 
second computer which does most of 
the hard work- PHLOOPY puts very 



" On - board* 1 
microprocessor. 




Nine D 
State-wide* head. 



N. Tape drive 
^spindle. 



Precision ground rubber 
^ pressure roller. 



little load 

on the BBC 

and uses much 

less RAM than most disk systems. 

Installing PHLOOPY on your BBC 

You'll be amazed how simple it 
is to install PHLOOPY. Just plug 
in the interface cut two resistors (clearly 
marked in the instructions) and the 
job is done. If you should have problems 
our engineers are waiting to help you . 

Making a PHLOOPY Library 

PHLOOPY cartridges hold 
a full 100k of data or 
programs. Two of 
them come free 
with the drive 
and extra ones 
cost £3. 75 each 
plus VAT. They are 
moulded of high impact 
polymers for protection and store easily 
on a bookshelf. Many programs will 
be available to purchase on PHLOOPY. 



Twelve foot lonji loop of 
lape freely packed into 
■ cartridge. 

PHLOOPY tOQk cartridge, 
shown not yet 

pushed fully home. 



Phi Mag Systems Ltd. 

PC) Box 21, Falmouth, 
Cornwall TR113TD. 
Telephone: (0326) 76040. 




Order Form 

• Please send me further deiaUsaboui the PHLOOPY 1001c 
data storage system lor the BBC Model B. 

• Please send me (qty) PHLOOPY starter packfs) 

for my BBC Model B microcomputer, including PH I .( X >PY 
drive, BBC interface, leads, connections, operating system in 
firmware^ manual, and two PHLOOPY 100k cartridges, at 
£147.75 each including VAT. postage and packing . 

Amount £ 

• Please send mc (qty) packs of 5 PHLOOPY cartridges 

at £19.75 including VAT, postage and packing. 



Amount £, 



I enclose a cheque/PO for £ OR Please debit 

my Access card: Number: 

Your order will be acknowledged wi thin 10 days T giving a 
deliver, date. 

Name, ■ 

Address. 

Town; . 



.Post code- 



Send this coupon to; 

Phi Mag SvstemsLtd, PO Box2t, Falmourh, 

ComwfaU TR 1 1 3TD. Telephone: Falmouth (0326) 76040. 

14 day money - hack option 



YC 



il-E 3E*l MFlWME in AGE* 

C 6* □ tfcCnUlil CD 33C □ ELECtROO □ 



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FANTASIA 
DIAMOND 

Delve deep into the age of 
fantasy with a host of 
i r it r pgoing character s that may nefp or 
hinder your exploration of this dream 
world 

Relieve the magnificent Fantasta 
Diamond recently stolen and rescue 
Boris the master spy from the imposing 
fortress and its evil guardian Talk to 
the Robot, Violinist *nd other 
characters to illicit their help 
An enthralling and sophisticated 
graphu adventure by Kim Topley for 
[he Spectr urn 48K, Commodore 64. 
BBC Model a* and Acorn Electron* 

SRP £7.95 

*No graphics on these versions. 




-■firj?' 



ft HEATHROW AT C 

I_ Vour challenge in the age 
of technology k& to 
direct the incoming 
aircraft at the world's busiest 
international .nfpon. Heathrow. 
Monitor the stack displays of altitude, 
heading, velocity and a*rcraft type. Scan 
the radar for blips and trails Devetop 
your sniJis to tackle emergencies, rogue 
aircraf t, radio and instrument failure 
A highly acclaimed simulation of one of 
today's most demanding jobs, by Mike 
Male for an/ Spectrum, Commodore 64, 
BBC Moder B and Acorn EJectfOTL 

SRP £7.95 



(§#&} 




: 



MEWMX1 COfliULCiinn 



* ^-, >?3DLUNATTACK 
,»' Do battle with me 
^**" Setddao in a futuristic age 
Pilot your ZS Hoverfigbter over me 
craters and around the mountains of the 
luna landscape Equipped with the latest 
iridium lasers, duodec missiles, radar, 
navigation and shields penetrate the 
Seiddab defences and head towards 
their command base Destroy the 
Seiddab Daft Tanks, Aerial Mines, misirte 
Silos and Hoverfighter s, you must not 
fail m your mission to drive the Seiddab 
from their luna base. A stunning ID 
Graphic Presentation by Steve Turner for 
the Spectrum 48K and Commodore 64 

SRP £7.95 

At v jt i ; ' our corfeTOPif/ drwoprpi*! if nwnf wfrMir , 



E|M - ■ ,'. |ii > V. 






Setertrrt iimw .ivM'Mf (lomCentiPiofi t>wpn 
,in<l <UI leading c empiric wttviA" ' 



«HSMIIH 



Rmfl b H t OOT 



iEZ- 



LASKYS 



MMV 



(continued from page 1d4) 
lo drop them into the volcano on the right . 
You have three men which can be lost by 
hitting i he scenery, running out of time on 
each bombing run, being htt by either the bird 
or helicopter Or by being struck by lightning. 
To make it more difficult, with each run, the 



SOFTWARE FILE 



scenery gets slightly more difficult. 

Also the controls of the glider arc difficult to 
master. Left or right is obtained by moving 
(he joystick in the appropriate direction, but 
to go up or down you have to hit a thermal 
and they may not be where you want them. 
You get 100 points for each bomb (hat lands 



on target which is done by pressing the fire 
button. When all your men have been lost 
press the space bar to continue. The screen 
displays lives, score and time for each run. 

If the task of typing in the program is too 
daunting it can be obtained from me Tor £4 at 
3 Greenfield House, Greenfield Road, Colne. 



Program I. 



I POSK/W-ISH «J« iri-s*.; H.m*«iC) I 
3 «Wf|r Uif*IITTl*JIIf«»*« 

* nuwr-3- w»mtry,vi7 mm- ■ oooovoovomt itwcw Ton. 

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YOUR COMPUTER. NOVEMBER 1 984 1 SS 



SOFTWARE Fill 



Roulette 

A P Brooks. 
Warrington, 
Cheshire. 






[HIS GAME Is u version of the casino game 
Roulette for ihe Armirad CPG464. Full 
nisi run ions and a list of all the main key 
term* are listed in the program. 

The program makes good use oflocomoiive 
Basic and also includes the tune ^he 
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(conrinuad on page JtW) 



190 VOUBCOMPUTEH. NOVfMBEH 196*1 



ip. 



IIEWIUTE HISTORY 

nns weekend: 



AltQcttonsiraregy games fTomSS!^ 

A- list b«t is jKJ clwunt to «« ho* yon sbpe up as 4 
CffiojJ 12 j real tank! The pages of bistey nctri tk 
mutiiB uul iutsis «s Eoefthctm Mobiqibcit, 
fame! art fco Kaadstnll kfljed in Eisrope ud Hail 
lino, hi will i dm thinking steitefHI 
ok iffJxU in wmtfd perhaps d» 
intonus woik have bad a difleiwl ^ 

nwy to wrUi! ^ 

U GeM b proid lo preset four of lb 
best sMeay ?anes by Strategic 
Sulatmi Itcorpoiaiai; 

WIGHI5 OF THE DOZBT pilots Ac 

MsbF««ofltoit90ii«jyagiiisHke 

wjk tf R«jb*I ai hJs Panw fcrai« 

a she daac Rank African uapogt 

rftML 

IITTLC FOR KORMAKDY commences oa 

■ J-taj" ]iftc 6th LM aid relives tie 

IKh Forces anmp! to smash Hills i 

ItiuttWil) 

IKBKTHESXOlmnstnKtstitt j 

fafadary knit of lh* Bakie as m 
bVmkt 1944 Ik Paiter Dm&mi of 
IfoRudstedttryeielastgarableina 
AsBnle attojf ft bait EtsenbowaV 

Ik will be ik new and who the 




•ttiewofld^ No) vwgome company 
OTmari 



Spectrum wrstons 
avdbbiesoonj 





COMBAT 
LEADER 



My yn in e Ik 

Wwerj] 

lai if join total 
b strategy with arcade acta Iki 
COHBAT LCUQ will lsi all yw wtls, 
riefOi of tetfk ad rtfkm in this 
r of knle ctitapes? 








%JV 



MCflN SOFTWUfcE FOR YOU ON U.S. GOLD 
^ading computer stores including: 
BOOTS WH SMITH JOHN MENZIES WILDINGS WOOLWORTH 

DCIU38 F« uhnaiiaa m bm 
rabKoae^PiCpMllKfet 
wmt *> CwtrtWt Lit , foil SI, 
Tk Partway iriJitMi Cewie, 



"MephMr 021 J59 JJfl 




strategic simulations inc 














The Fersuson TX HCOI has separate RGB, 
Composite Video and Penal IIHIII inputs: 
a choice of ^P^} connections I for 
computers , video games 
and video recorders. These provide the 

SHORTEST (and best> routes for computer 
and video signals to reach the tube. m 

The loop aerial shons that the MC01 ■ 

is also a portable colour TV. 

find there's automatic electronic 

switching between functions. 





f"i 



iei 



Ferguson just 
r monitor? 



be small print 



A glance at the screen of our ^™ new MC01 will tell you 
how far it is from being just a monitor Or just a 14" portable colour TV 

One advantage of our double act is worth repeating, if only 
because its another Ferguson first: 

lilecrronic switching lets you change functions automatically 
from monitor to video recorder toTY 

; You can plug in any combination; leave them permanently 

connected; and wave goodbye tospaghetti junction round the back. 

Convenience is matched by performance. Computer graphics 
and pictuiequalityarcferbetterthrough our RGBand Composite Video 
inputs than through the aerial socket of an ordinary TV 

Computer audio output sounds better through the speaker of 
theMC()l.(And if the beeps arc ux) loud.vou can turn down the volume) 

The full potential of the MCOI will be revealed bv yotir Rerguson 
Dealer; as will the optional Battery Converter which makes it totally 
portable; and the matching computer-dedicated cassette recorder 3T3L 

If total dedication is what vou're after, hell tell vou about our out- 
standing new 12" monochrome monitor MM02 which is particularly 
suited to text applications 

But if you need a monitor for a home computer.it makes sense to 
get one thats also a cxdourTV Especially when it onlveosis around £224 

And if you want a portable colourTVwhy not get one that's 
alsoa monitor? In the BetPttson \ l< >nitor l , | ~ ~~ 

UJ FERGUSON 





Colour TV you get the state of two arts in one. 



®QSlfc)®(§l®(o)®®®®CD(c)®|Q)®(g)®®®! 

LOOKING FOR A HOME COMPUTER? 

qi:^ ALL ROADS LEAD TO mi 

MICRO POWER 

'01 







'v& 



MEMOTECH MTX500 

MEMOTECH > 

MTX512 



58g» 



*« 



.H 



£275 



® 




An ex co lien! choice for both the 

beginner and the Spectrum owner 

wishing to upgrade. 

Features Z80A processor SN764B9A 

sound chip (the same as m the BBC (VlfcroJ. 

256 x 192 graphics resolution. 16 colours. 32 sprites 

two Atari-type joystick ports, composite video socket 

number pad Sophisticated utilities to aid programming 

include built-in Assembler/ Disassflmbler and monitor. 



BBC MODEL B plus 

CASSETTE RECORDER 

AND 5 MICRO POWER 

OR SELECTED ACORIMSOFT TAPES 



Features 32K, BBC BASIC (the fastest on any home 
computer). 8 display mooes. 16 colours. 640 x. 266 high 
resolution graphics. 3 voice sound plus noise channel, 
RS423 and Centronics printer interfaces, joystick port, 
built-in Assembler. 10 user definable function keys 
Complete with a 16 program cassette and 512 
page User Guide, 



i- 



© 




COM MODORE 64 

HEECOMPATIBLE 
CASSETTE RECORDER 



© 






SPECfAL 
OFFER! 

£199 




Features 64 K. Microsoft BASIC. 
16 colours. 8 mufti -coloured sprites, 
sound synthesiser (producing the best 
sound on any micro). 320 x 200 graphics 
resolution, four function keys, two Atari- type joystick 



ports, cartridge slot, parallel printer interface 



■ 



BLACK AND WHITE MONITOR 
| AMSTRAD CPC464 WITH 
I COLOUR MONITOR 



■&8 



: P4 9 






Features built-in cassette recorder. 64K of memory, 27 
colours. 80 column text mode. 640 *t 200 graphics 
resolution, joysticks port, separate number pad 



We also stock a wide range of monitors, disk 

drives, printers, joysticks, light pens, books, 

software and much more! Please send for our 

complete list, 



MAIL ORDER AODHtss 
DEPI PCT11 
MICRO POWER LTD 
SHEEPSCAR HOUSE 
SHEEPSCAH STREET SOUTH 
LEEDS LS7 1A0 
Tel 10532) 434066 

showroom address 

MICRO POWER LTD 
MO HTM WOOD HOUSE 
NORTH STREET 
LEEDS LS7 2AA 
Tel 1053?'. 458800 



ACORN ELECTRON PLUS 
CASSETTE RECORDER OR * 
5 MICRO POWER TAPES 



The scaled down version of the BBC Micro" 
Features BBC BASIC 32K 7 display modes 
(including 80 column text mode and 640 * 266 graphics 
resolution}, 16 colours. 9 octavo sound plus noise 
channel, built-in Assembler Complete with an 
Introductory Cassette containirKj 16 programs, a User 
Guide, and a book "Start Programming on the Electron " 



SINCLAIR SPECTRUM 48K 
PLUS FREE 6-PACK i 

SOFTWARE t 



Pm$ wflWtf AT TWt 
OF WJHB TO PAIS? AU 
ffKt 5 NCU£ftE V VAT 

AVAAABiE PLI-ASC 
CONTACT US FOR fURTHEFt 
CCTAIS CARRIAGE mi 
HJfleBCAKDIWMOTtCH 
All flTWR COMPUTIftS 
fSCO UK UAMLANO 
ONLY 
4MUHEE PAWNS! 







SOFTWARE FILE. 



(continued from page 190} 








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Quadruplets 



Horiey, 
Surrey. 



■?W?TCBW50B 






QL'Ar>HTTt^np:a oiptivalmg game of vertical 
strategy in which The pliiycr Tfirt ID Oui-lhinV 
ihc computer. Tile game is simple in concept 
fail can develop into a challenging battle of 
taei.es. which make* quadruplets an absorbing 
game for all members of the family. 

A modem, micro-based version of noughts 
and crosses the bask objective: is to complete a 
line of four counter;, in ihc playing grid — 
vertically horizontally or diagonally — before 
the Ql does the same. This sounds easy 
enough, but the computer makes sure that it's 



not. The limitation! imposed by the vertical 
play of this game make* it necessary for the 
player id think ahead, or risk being out- 
manoeuvcrcd by the micro, 

At each turn, the counter is placed above 
I he required column using the cursor keys. 
Pressing the spacebar will the drop the 
counter into (be column selected until it 
comes 10 rest upon another counter or CCffle* 
ro rest upon the bottom of the grid. You 
should be careful not to press too long on the 
spacebar, however, since the QL has auto- 
matic repeal on all keys and a very effective 
keyboard buffer which can mean that you 
inadvertently play several goes jhcid if you 
delay on the keys. 

Although written in Basic, the program has 
been designed to make full use of the 



advanced graphics facilities of the QL and a 
reasonable fast and powerful game ensues 
The human player always plays the green 
counters, and the computer always plays red. 
These colours have been selected to give 
effective displays on both colour and mono- 
chrome televisions and monitors. There are 
three optional skill levels and the previous 
loser always takes first go. The computer 
visually displays a winning line when one is 
achieved and keeps a running tally of the 
game score. 

If typing in a program of this length proves 
too daunting a task then t can supply a copy 
on Microdrive cartridge for a cost of £7.50 
including postage and packing. Please Send all 
enquiries to Victor Card, 5 Gartcrsmead 
Close, Hortey, Surrey RH6 9LG. 



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(continued on page 197) 



YOUfl COMPuTEfl. NOVEMBER 1984 J&& 




A 96K PURE TEXT MACHINE CODE ADVENTURE FOR 
THE 48K SPECTRUM (IN TWO PARTS) 



A large build up of Soviet troops is forming on the South Eastern 
Pakistan border, with probable hostile intentions. Troops and 
supplies travel the fragile Eastern Kabul road through unoccupied 
territory. Your role is to disrupt these troop movements, harass 
supplies and prevent the Soviets from attaining their objectives. 
You have British Paratroopers; ground to air missiles for attacking 
their airfield and destroying helicopters; plus rebel guerillas to lay 
ambush on troops and convoys. 



Ptea&e <wd me oopyfws) of AP6HAN ATTACK' 

hi E9.S5 6Kh. I endow* Chequa/PO. made payable 
to "Southern Software' to mo vnRte of „ ,„ , 

Name „™„ „ 

Addre 

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SOFTWARE HUE 



(cortttnued from 



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Hard Lines 

Nigel Bates. 

Bradford. 

West Yorkshire, 



iRECmUM, 



THIS rRtxiftAM has been written on a 4SK Z3E 
Sped rum but will run on both 16K and 48 K 
machine;.. The machine code is Mored in data 
stitemems from line 30 to line 110 and is 
Poked into memory by line 10 and line 100, 
the machine code is used to move and display 
the notes and the ink jet. 

The rest of the program is in Basic And 
control* the number oflives, screen number, 
screens, bonus and high scores. It makes full 
we of the 16K of memory, colour, sound, 
high resolution graphics and includes four 
dilTercnl screens, 



Program nates 
lines 10-110 

99S1Q00 
1000-1020 

t020-11t>0 
20002070 

2100-2499 



Pokes machine code 
into memory 

initialises seme 
initialises go and calls 
the machine Code 
Selects bonus 
Sub routine; to draw 
scree its 
Dal a lor screens 



vanabres 

h$ Hiflhscore 

aS Score 

bS Bonus 

cS Messages 

1 Live* 

* Level or Screen 



(6 digits) 
(6 digits) 
(4 digits) 



Other variables have miseiianeous uses 
a.b.xy and n$. 



Just type in the program as listed and m». 
To save use 

SAVE Hard L.nes" 

The program uses either the Sinclair Interface 
2 ox the keys: 6 Left; 7 Righl; 8 Down; 9 Up; 
Accelerate. 

Guide the ink jet around the maze to try and 
reach the centre without hitting either the 
walls of the maze or your trail. You have a 
Limited ink supply and are timed, if you can 
reach the centre before your time reaches 600 
then you are awarded a bonus of 1,000 points 
plus a 500 point bonus for reaching the centre 
dot. If you complete a maze you art con- 
fronted with a new maze, there are four differ- 
ent screens and then it returns to the first 
screen. 



l 

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20 
30 



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1 / * i 2*2 2 _ 
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Character definer 



■J Gardiner, 

Wymondham. 

Norfolk. 



W 



3 



- *- - - 1 *■ ■- J ' •_• *_•■. 



THIS PRtXiltAAl is a comprehensive character 
definer Ii is very user-friendly and allows 
redefinition of characters on the Amstrad 
CPC-464 micro. 
As well as the standard "pin el -by-pine 1" 
(continued on page 201) 



VOUR COMPUTER. NOVEMBER 1 984 197 



How to become 
before committirig 




9H 



e a great writer 
2; yourself to paper. 



It takes onlv two minutes and £59.80 to 
transform vour BBC Micro into the* heart of 
a word prncosnr with VIEW from Aeornsoft 

The \ lEVt word processing system is 
programmed into ;j single chip, a I6K plug^in 
ROM. Once it's installed into your BBC 
Micro - a simple job for vour local dealer - 
von just switch on and \ ll'V\ is operating. 
(Wi can switch to other programs, like 
B \S\( '., with a single command.) 

VIEW is a professional system, yet its 
suqmsinglv straightforward to use. 

\nd it's so outstanding its won the IfJfVt 
British Microcomputing Award for Home 
Software, 

All you do is type out vour text on the 
keyboard, and view it on the screen 

VIEW can search, change and replace 
particular words whenever thev occur in your 
text It can swap paragraphs. Automatically 
alter page numbers. Even count words. 

The possibilities are endless, because 
you can check edit and change as much or as 
little a> you like until you're satisfied.- Then, 
with a single command, your final version 
will appear on the screen. 

(1 you want to go even fu rther the simple 
addition of View Index, just £14,95, means 
you can select and index words, complete with 

1* V j' page or section 

numbers. 



Prnter Driver 
Gonardtof 





And of course, when you're ready, anv 
printer that will operate with \mii I UK ! Minn 
will operate with \ IEW Hut il vou want to 
use the printers special facilities, such as 
bold printing or 
underlining. 
Aeornsofts 
Printer Driver 
(venerator (£ ( A95 
on cassette, 
£11.50 on disc) 
enables vou to 

do SO, 

For the 
more socialised 
user who wants 
to take advan- 
tage of the extra 
power offered 
by the 6502 Second Processor, Hi-VIEW 
(£59,80) provides 17K of text space in anv of 
the BBC Micros screen modes. 

So whether vou re composing a 3(M) page 
busin68S document, a letter to the gas hoard. 
or a bit of Victorian nonsense, vou can 
polish it to your hearts content, wasting 
precious little time. And even less paper 

You can get VIEW products from vour 
Acorn dealer. Just phone 01 -2000200 for your 
local stockist 

Vlteniattveh. vou can send off for the 
\ iev% Eamih brochure and order through the 
post b\ contacting Aeornsoft, cfo\fector Market- 
ing. Denington Industrial Estate, Welling 

rjortxiANorthantsNN82RL Tel: 093379300. 







IT* 

Viewlndex 

*l*llKHlHHTM' 


Hi-VIB# 


J ■ J 

t 


1 ■ • 



>1C0RNS$R 



Ilii i--\i nil id. .. 1. .11 1. in \t. .1. f. 



NOT FOR 
PEOPLE WITH 

HIGH BLOOD 

PRESSURE! 



Watch out for them— 
these four new games 
could be dangerous to 
your health. And, as 
they're from A'n'F, they're 
second to none, calling for 
a level of skill that's 
bound to set the adrenalin 
racing. 





SPECTRUM 4SkCYLON 
ATTACK— Now with better 
than ever r so metric perspective 
graphics (3D). £5.75 
BBC 32k SNARL-UP— Sheer 
bumper to bumper frustration 
and only five chances to hit the 
fast lane. £6.90 

COMMODORE $4 GUMSHOE 

—One bleepin' obstacle after 
another stops you reaching a 
girl who needs you — 
desperately. £7.90 
SPECTRUM 48k ALPHA-BETH 
— The brain teaser that makes 
it doubly difficult for you to give 
the right answer, £5.75 










A&F Software, UtiH 8, Canal Skle Industrial Estale. 
WoodWne Street East. Rochdale, Lanes OL16 SLB 
U706 M1111 



(continued from pa$e 197} 

definition procedure, it also enables the user 

to: 

■Rotate the character lo the righi by 90 
degree* 

|Plip all the character's bits to produce trie 

mverie" character. 
■Produce a mirror image — in the vertical 
plane — of the current character. 

■Save the defined character's data map to 
tape. 

■Read m previously saved data maps. 

Definition takes place on an cigln-by-eight* 
grid, over which the user moves a cursor using 
■he cursor keys. Pixels of the character can be 
"loggled" on and orT using the Copy key. 

Pressing R rotates the character by 90 
degrees to the right; F inverts all the bits; M 
produces a vertical mirror image of the 
character and D allows the reading in of a 



SOFTWARE me 



saved data map for further adaption. Pressing 
C when the character is complete produces a 
print out of i he data map in both decimal and 
hexadecimal. Ai this point rhe user is given 
the option of saving the data, mpp to tape, and 
then whether he wants to rerun the program. 

Conversion of this program to run on other 
micros may prove to be difficult. This is due 
to the fact that it uses a pair of windows on ihc 
screen and al so i hat it uses a t ran spa ren l mode 
of character printing. Windows are a feature 
found on only a handful of other home micros 
and the "transparent'" printing is — to my 
own knowledge — unique to the Amstrad. 

A stripped-down version of this program 
can be produced, but ii would involve 
redesigning the screen layout and compkteh 
changing the screen-handling routines. Also 
the Symbol command would have to be 
replaced with Pokes to define a character. 



The program allows you to dump the 
characters you have just defined to tape as a 
binary file called Char. 

If you want to load these into your games 
program, or back into the editor for further 
editing then follow the procedure shown in 
lines 70 and 75. 

SYMBOL AFTER 123 
LOAD "CHAR" 

■ Although ilimem will normally he the 
same, problems could be caused by the user 
attaching add-ons to the machine which will 
alter Himem. 

In this case, if you say add a disc drive to 
your system and still want la use characters 
you defined be Tore getting it: 

SYMBOL AFTER 128: CLOW = HIMEM + 1 
LOAD CHAR", CLOW 

will put the characters into the correct 

position in memory. 



L 



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■ 11- 



Autopause 



fan Cash 



I 



A useful FEATtfRF. on many games is a pause 
con trod il lowing the player to take i breather 
from zapping all thmc aliens. However, not 
afl games have this ability, and this a where 
my program helps. 

tt was written on a -tSK model, but should 
work with any Orit using the V'1.0 operating 
jvm cm and should not be too difficult 10 
convert for other Orics. As the program Ttlies 
on interrupts it will nor work with game* 
which do not use them — but this is a 
minority I'm sure. The only other drawback is 
t small delay in keyboard response when 
typing in direct mode, but as this does not 
apply to games I'm sure it will not be noticed. 



Any key may be used as the pause control — 
including Ctrl and Shift keys -- by simply 
changing line 60 according ro table 1. The 
game will pause as long as this key is pressed 
and continue on release. 

After typing in the program and checking 
carefully, Run it, and then Cload the game. 
The routine Can be disabled by 
POKE # 230, 64 



Table 1. For Ctri.lShift and RShiit, 
the first number on line 60 should be 
changed to W 09. 

The last number should be chosen 
from the tist of keybogrd v&tve$ to 
replace the ,30 for whichever key 
you wish to use as the pause control. 

Naturally this should not be a key 
already used in the program. 



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Tathf? i 1 continued 












9 RCH dflf ■wT.eSAufM Sw [ 


,Ca«n 








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YOUR COMPUTER. NOVEMBER ,9B4 201 




£14.95 




THRHh PSION (>H(iAN|SFBS plus 3 choice of 

software were up tor grabs in our September 
competition. To enter you needed to plate 
eight of the machine's features in order of 
importance As a tiebreaker we wanted you to 
suggest in original use for the database 
facility 

As usual our panel of judges made heavy 
weather or (he business of picking the 
winning list. AH agreed that the crucial 
features of the Organiser were its pon ability 
and data storage capacity: on the other 
features (here was fierce disagreement, 

"Speedy data access" wis ■ particularly 
trick)' one. It n obvioudj a vital feature, but 
can't it be taken for granted? Surely this is 
what computers arc supposed to be good at. 
And what about "rugged const ruction "? For 
most applications the device wouJd not have 
to be very robust. But perhaps Psion should 
consider bringing ou| a range of outdoor 
models — the Safari Organiser or an 



NISER 

RESULTS 

underwater version. 

The panels final choice was the following 
one: 

1. Pocket-sized. 

2. Permanent data storage. 

3. Battery powered. 

4. Reusable datapacks. 

5. Speedy data access. 

6. Software library, 

7 Own program language 

8 Hugged construction. 

The three entries which matched or came 
closest to this list were from; Matthew 
Langham, Dhauner STR. 184, 6570 Kim, 
West Germany; R Shaw, 3, Heathficld 
Cottage, Lodge Lane, Nailsea, Avon; M 
Gottlieb, 22 Gibbs Green, Edgwarc, 
Middlesex. 

M Gottlieb's database suggestion — for 



storing lecture notes — was a little dull. M 
Shaw was more original with a plan for 
keeping records of 100 cows. 

We were not sure whether Matthew 
Langham was joking when he wrote- "I would 
store some Pretty Special information on 
Natterjacks in my Organiser". A natterjack, if 
you are wondering, is a small toad which runs 
instead of hopping. 

Other database ideas ranped irom the 
humourous to the highly practical. Dutch 
schoolboy Nouter Falk thought he would use 
the data packs to cheat in exams, passing the 
machine off as a calculator. Good thinking, 
Nouter, you will be out of there in no time. 

But watch out for schoolmaster J Davenport 
whose idea is to use the Organiser for "filling 
subjectively observed day to day behaviour 
characteristics of pupils at the moment of 
observation". 

Daniel Langton refused to give anything 
away. "Private and confidential" he wrote 
coyly. Come off it Mr Langton, stamp 
collections are out in the open these days. 
Unless of course you are thinking along (he 
same lines as D Oliver who suggested "Red- 
hot phone numbers". 

On the practical level, ami -rank helicopter 
pilot Captain Husband thought to store daily 
changing battlefield codes and prnl references, 
while fireman D Dempster argued the need 
For a computerised A to Z index. Even more 
sensible was P Mcthcrall's idea of entering 
milk delivery details for his milk round, 

Lastly, Russell Cooper seems to be in some 
confusion with his notion of using the 
Organiser to compose music. 



HI 



Make things happen with Memoco, 




Iff/ 



200 in 1 Electronic Lab Kit. 

An <JmI introduction To £l*etreriic% 

tadwfa. a* t»rts to ma*t £00 protects Such 
n fade fain DtfatOf But J&t Alarm 
C0rt*i t* Wis Mm, tWStttOf'i lnn-itrjl.1 
Crcuit S*v#n Segnw* Dmttjyi lift* 
S*rtm«r# CfttXB and rrtutf rwrf 
Al component* Bu*t tnto fcttw) workui* 
Wl* cover Cor>«retatt*cMinial 
Cotfcplclriy Ufe 

K£!^£24.95 

Range Doublet 1 Multitester. 
43 Ranges. 

50,000 Own pe W* DC 10.000 OWf* t*« 
Volt AC 4 25" Co**/ LDdKl rrwrored (ksptty 
Giwni *CCur»H rotor* MtAoU »ki*m 

Normal Price I? 7.00 



£15.45 



|?Al*c4 

HM *»tf ■noter CO 
din** po*#f vxf*t 

D g b 



Witfi aosition 
feedback, 



Memoco Electron Robotic Arm 

mem Atm nne mi kmi J60 tirgn* ntftton mi m right 90 <*w«* Enow 

ttttfi *jfl«|||r**-**rttM!o*tfn«irHfl«i*<MJ»«i'**iitr* 360 *j(f ** 1**1 'Ctatierm 

CbMr OpMt »THl 

■<q( c*tw# SmtcftrQ Irom S vn« lit ConUfMtti try i umuufw S^tM**!* motor 



Computer Compatible Tape Recorders 



£28.75 



£89.95 
£119.95 



aa b 

Interface card , 
Speitfurn 
■ritMt*-,* «frt . 



Commodofft 64 inlrttdte caid 



£49.00 
£49.00 
£49.00 



I88CB. 



£22.95 



Acorn 
Electron. 



£30.00 



Spectrum _ erL££»^7*J 



ALL ABOVE DEVICES SUPPLIED WITH LEADS 




EMOCO 
ELECTRON 





15 WINDSOR STREET, 
MELTON MOWBRAY, LEICS. 
TELEPHONE: (0664)63544 



YOUR COMPUTER, NOVEMBER 1964 203 












PAINTBOX 

Supcib Graphic* — without expensive hardware! 

PAINTBOX is a must far every owner of a 
48K Spectrum, 

It will give you the ability to produce 
stunning graphics on your micro — simply 

With PAINTBOX there's no need for 
expensive hardware — why pay up to £150 for 
hardware when you can produce incredible 
picture and graphics with one cassette-based 
software package? 

If you haven't seen PAINTBOX demonstrated 
you're in for a pleasant surprise! 

For instance, PAINTBOX will enable you to 
draw practically anything on your screen and 
save it either as SCREENS or as a machine code 
memory file to use in your BASIC or MC 
programs. 

You wield enormous power over the graphics 
capability of your SPECTRUM — including the 
definition, storage and use of up to 84 UDG's 
— 4 times more than normal! A brief 
description of facilities are as follows: 

UDG DRAWING BOARD for defining up to 
4 Banks of UDG's including ROTATE, 
MIRROR, INVERSE etc, 

UDG EDITOR for storing up to 84 UDG's for 
use in screen planning or in your other 
program*. 

PRECISION PLOTTER. A high-resolution 
drawing board which allows vou to draw 
anything on the screen. Facilities like 
CIRCLE, FILL, ARC, PLOT DRAW, ERASE, 
OVER, DRAW RADIALLY, INK, BRIGHT etc 
are included and easy to use! 

SCREEN PLANNER £ives you the best of 
both worlds! The combined use of PRECISION 
PLOTTER and your Banks of UDG's for highly 
detailed and precise screen graphics. 

The program is complete with DEMO on side 
two of the cassette and a 28 page instruction 
booklet 

PAINTBOX can be used with Joysticks and is 
Sinclair Microdrive compatible 

SCREEN MACHINE 

Instant Machine Code for graphics and texl 

SCREEN MACHINE is a completely 
professional graphics utility to use with 
Paintbox (or any other graphics hardware or 
software). 

It will allow you to manipulate your screen 
graphics and text in ways which will make your 
programs better and more memory efficient. 
For instance: 

If vou have produced a screen-full of superb 
graphics you can enlarge, reduce, recolour, flip 
screen, relocate your graphics to another part 
of the screen, superimpose one screen on 
another and perform all sorts of other 
wonders! 

Then you can take your results and put them 
through a series of memory compression 
routines to allow you to save enormous 



HERE'S SIX WAYS T 



PAINTBOX 



SCREEN 

MACHINE 







1 







amounts of memory. Such items like 
compressing with or without attributes, saving 
thirds of the screen and multiple combinations 
of both are possible. 

Never has machine code storage of graphics 
been simpler because SCREEN MACHINE 
automatically creates re -callable multiple 
screen files with a location catalogue so that 
you can add them to your programs! 

SCREEN MACHINE also allows the user to 
program UDG's or text directly into machine 
i ode, soil yow programs use a lotoi text 
instruction's or menus SCREEN MAC \ ONE is 
going to save fantastic amounts of memory! 

SCREEN MACHINE is a major graphics 
toolkit for the 48K SPECTRUM. It is complete!] 
menu-driven, Sinclair Microdrive compatible, 
and comes with instruction book and an 
unbelievable DEMO on side 2 of the cassette. 

ADVENTURE PLANNER 

A must fur the advrnturp ganu' i jn 

If you're an Adventure Game nut, Print 'n' 
Plotter's new ADVENTURE PLANNER is 
exactly what you have been looking for! 

It's a 50 page, BIG SIZE (16 3 /4 ' x TV/a ") pad 
with a complete 'mapping' system with over 
150 locations on each sheet . . . created to help 
you solve Adventure Games. 

It's the besl way to beat the 'system' and is 
obviously lor use with anv make of computer. 

ADVENTURE PLANNER will also assist you 
in planning Adventure Games for 
programming — a helpful pad to keep by your 
computer at all times. 



204 YOUR COMPUTER. NOVEMBER 198* 



fC MPROVE PROGRAMS. 




ADVHNTURfc PLANNER is published with 
instructions for use, examples, hints and tips 
on how to play and win the game faster. 

ADVBNTUKE PLANNER is a high quality 
pad, board-backed and fly-leaf cover . . . 
economically priced too! 

ZX SPECTRUM JOTTER 

F'f tr- p J j lining your screen nude easy . . . and precise! 

Print 'n' Plotter JOTTERS have become a 
household word for the Sinclair enthusiast. 

Despite various imitations our original ZX 
SPECTRUM JOTTER is still the one people 
prefer! 

Of course it could be because it is 
professionally produced , . . the quality is 
superb. 

And the fact that it is BIG SIZE A3 (Wk" x 
1134 ") is a distinct advantage when working in 
hiv;h -resolution. 

It's also 100 pages thick, 50 pages of PLOT 
grids showing each numbered pixel co- 
ordinate and 50 pages of PRINT grids showing 
everv character and graphic character position 
and INPUT lines. 

Each page also contains 24 UDG planning 
grids (24O0 per pad). 

Consider also the fact that it is printed on 
Artist's Detail paper . . . thick enough to take 
any writing, drawing or colouring, yet thin 
enuugh to overlay onto a drawing and 
trace -off. 

For pre-planning graphics, text, tabulation or 
anythi ng to pro duce "on screen', a Print 'n' 
Hotter JOTTER won't be beaten. 



The complete package comes with a set of 
coloured pens, a Pixel ruler and a handy 
corrugated storage tray. 

If you use PAINTBOX, SCREEN MACHINE 
or any other graphics utility . . . vou'll do 
things better with the ORIGINAL Print 'n' 
Plotter JOTTER! 

KEYBOARD OVERLAYS 

The simple answer to "Which keyT' 

Print 'n' Plotter KEYBOARD OVERLAYS for 
the standard ZX Spectrum keyboard are the 
economic answer to "Which key does what?" 

If you program, or buy commercially- 

f»roduced software, sooner or later vou'll be 
aced with a mind-boggling mass of keys that 
perform different functions. 

Let's face it, the Spectrum keyboard is 
complicated enough so why not take the easy 
way to remember . . . 

... lay over the keyboard a Print 'n' Plotter 
OVERLAY and write the function underneath 
. , , it's child's play! 

Print 'n' Plotter KEYBOARD OVERLAYS 
come in packs of ten. Punched to fit your 
Spectrum. Priced to suit your pocket! 

ZX PRINTER PAPER 

H igh (\ u a I it v- t h e a pe r l 3 rit *? ! 

Print 'n' Plotter have gained a good 
reputation for the most reliable and high 
quality PRINTER PAPER for your ZX PRINTER. 

Now it's even better because we've reduced 
the price! 

So if you want ZX PRINTER PAPER that 
gives good, clear print . . and you want it a 
little cheaper . . . send today for quick delivery! 



ORDER NOW OR ASK YOUR 
LOCAL COMPUTER SHOP! 

CREDIT CARD 

24hr ANSAPHONE ORDERS 

01-660 7231 

(PhMWOI-HJJW-U 1 ■ ir Deafer jnd rfhrr enqutrief) 

Pbst In Dept V10 Plftrt n Plotter Pmduila Ltd B Borough Htfh *<««, 

I unden St 1 *>[ Pt wl t wnd Rlr iht fullmring. 

PAINTBOX SOFTWARE ® £ 3-25 

St REEN MAC HINE | I It ^ 

ADVKNTURE PLANNER ® £ 4.50 

SPECTRUM JOTTER PADS Q £ 9,00 
KEYBOARD OVERLAP »t 2.95 

5 ROLLS 3tX PRINTER PAPER fcilZ.OO 
. » ROLLS ZX PRINTER R^PERCOS 00 

I] ['I i ■.»-.- tu k this K'>. for I 'aintbin Microdrive instruction* 
Alt prices include VAT and L'.K postage 
Ottmw orders add 25% on quoted price* fur addiiiLnul handling 

B I endow remittance in lull 
Flr*fc bOI my ACt ESS BARCLAY ARD VISA •' MASTERCARD \« 



1 



1 














i 










Nam 




•» 





¥10 



"^sT 



rtXJR COMPUTER. NOVEMBER 13B4 205 




■ • f 

X; ^.L-THfe ULTIMATE 



31 n computer $ •:>? 
tharawarrer 






C ^^o, 



Cf NTROHICS P1IMTI* 



^^//iU\V> 



_f«OG»AM*Utu 
•'OK. 



^ VIC 20^ 
^SPECTRUM^ 

f Z / I t 1 1 1 V *■ i. XX 



^orici/atmos<n: 

v^COMMODORE 64v\ 

/ / ///ii\\\\\ N 



F«- full aVtojU and FlfE Can of Worms poster t*nd a Jorge S.A.E. to: 
DOWNSWAY IUCTKONKS ! U.K.) LTD., Depot toad Epwm Surrey KT17 «*> 

lbhipsomt 03727) 272 2 2 Tin; 877837 McritG. AcwwViw wife welcome. 







PENTOMiNOES 




'►* Af* *11h * U*'.l 0«l|Af*C4 



1 I tt 




re 



MOI1IHH. KHIOtk. 
H.W tmu«i 

•*■■*•» W11' wi 1 1* 
•*• .( ■*■—.— wb> < ut* 

• « MX •* I «M 






THE 






MICRO WORKSHOP 

MICRO COMPUTER 
SPECIALISTS 

(Spectrum Group Member) 

Software and hardware over the counter tui 
Sinclair Spectrum, ZX-81, BBC,. Vic-20, CBM-64, 
Memotechj Amstrad, etc. 
" COMPUTERS * RAMPACKS 

" JOYSTICKS * BOOKS 

" KEYBOARDS * DISCS 

* TAPES * LIGHT PENS 

* COMPONENTS # 
Business/Serious Programs available 
Located directly opposite Epsom Main Lint 
Station. Visit us or ring for friendly service, See 
and try before you buy. 

Overseas/Export orders welcome 

12 STATION APPROACH 

EPSOM, SURREY. 

EPSOM 21533 



206 YOUR COMPUTER WJVfMW-R 1984 



L 



THOUGHTS & CROSSES 

37 MARKET STREET, HECKMONDWIKE, WEST YORKS 

Telephone 0924-402337 



,f >•* K**« (ID 
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ALL PRICES INCLUDE VAT AND DELIVERY 



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Range of programs available fof MIX, BBC 3^0 Electron 
ofdet stating HI Programs required; (21 Computer. (31 Amount enclosed; «4] 
All fMices include pach>ng £ VAT Ove'sene orders wpIcofd-j 



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Name & Address 




a : 



VOUB COMPUTFH. NOVEMBER 1SS4 207 



ADDONS ADDONS 



ZX81 SPECTRUM 




The Fuller FDS. Now batter than ever 1 AH the features 
you'll ever need from a Spectrum keyboard all in one 
smart, durable unit Space bar, cursor control keys, single 
key delete, cape shift, symbol shift, Fl mode, separate full 
stop and comma keys, beautifully made, handsome to look 
at and a delight to use. £49.96 plus C2.00 p.p. 



PROFESSIONAL CASED KEYBOARD TYPE FD42. 
Models for the ZX61 and SPECTRUM 

iPUASi STATE yVHICHl 

The Fu**> f 04? n*t tertg tn*n ow fioat pack e r itf i " Urn alkird*/. iitpetinr* bui. **f* 
lOuflh Snellen madded *ft5 j-jm 'khjm i IM* Computer ***! convert* il A 

[o • ero'eiwon* 1 unit with *J luPt 
•an konjWt CWnfWlW-Err<a "u!l 
MM! *e*» Kevi ere ind»M>if 

*!Ch*d wrth iXfll O* SfHHilrurn 

Kftnll Ho 1Mb or w3ta*pmy 
rmdtd *»d M •««■ •» 
mMilWned to1f>» iw pvn etc »et 
•OS on* Powf tuopty L*n be 

Irttad man** H.» m|*grai LfO for 

DOHar ON.'Qf F mdML*!*** lA *ll * 
|hOHXflJh*¥ MWIlHltld* *cc»»H5rt 

to wqur cumowm Ut.M D£u* 
(2. DO potieoe end handing. 





The famous Pad da Expandable RAM 
pack for the ZX81 Massive 1 6K add 
on memory which can easily be 
expanded to a GIANT 32K with an 
optional plug-in MODULE. Rugged no - 
wobble design injection moulded case 
with integral LED power on indicator. 
No additional power supply needed, 
just plug on and go, British designed 
and built. Thousands in use. Prices; 
PANDA 16K 1 19.96. MODULE 
f 14,50. GIANT 32K £34.00. 



PRODUCTS ME STQCIED USD USUALLY DESPATCHED WITHIN 10 DATS. 

~" J wiih la oTd*r tbm following fftoa«*fort which computer/ 



TOTAL £ 



All price* include VAT end poi1 ami pacbigmq Alt itair.i mclud* ■ hill real 
guarantee Prnduirl* eta •locked' end ^unllv despatched within lOdayi Ovei«*a> 
cuit««n *W £4 poel and packing Cheque* Poetel Ordwt etc payable Ifi 
TREM3VEB LTD _ , , , , 

Plua> debt toy Ajcchm B«iclflyr«rdT>Wf» Club Lnlaa b*lo- Round the clocit 

■**9 Telephone uid*r* 

jee. trcsstsne 

c.dHo naaaanDnnnnannDD 

Signature 

Nam* , 

AddttH „ — _ . — . 



VC6 



SPECTRUM UPGRADES 16K to 48K 

THE KIT - Fit H yourself, a beautifully packed and 
presented kit with complete I Really complete in the detail 
you need if you've never seen inside your computer) 
instructions. No soldering - no wire bending - no fiddly 
bits. Thousands in use. Everything you need to upgrade 
your issue 2 Spectrum from 16K to a full blown 48K. 
The really economical upgrade — in stock for swift 
despatch. £24.00 



THE PACK - A sturdily packages 16K to 48K upgrade peck 
that Simply plugs On to the user port and works 
immediately Throughport so any other accessories may be 
fitted as before. No need to open the case, no unscrewing, 
no soldering, no need to invalidate your guarantee. 
Designed and built m Britain. Guaranteed. Supplied in 
handsome carton suitable for gift wrapping. £39 95 



NEW!! Upgrade your ISSUE 3 Spectrum from 16K 46K This 
kit is supplied with full parts and very comprehensive 
instructions as to how to upgrade your ISSUE 3. Due to the 
change m design of the issue 3 this has not been possible 
with previously available kits. Not for the complete amateur 
as it requires two simple soldered connections to be made, 
anyone who has soldered before or who has a friend can fit 
this quite easily though. £ 26.50 



VIC 20 



THE VIXEN SWITCHABLE RAM 1 34.95 

]0K RAM CARTRIDGE 

The Vimn 16K •witehabla Ram cartridge ■■ lhiioud approach to bipandng 
your VlC 20 Being switchable. from either 16K to 8K • 3K programs already 
m uH b«l«d on ih* vni>*pitv3*tf Vic 20 *r« rtOI ob*o)*laX) Suppled tn 
attractive cuilbm mads cote it simply ptuas irtto the rear of the compute! Or 
rTMltVfrrboard. No 

addit4ot poww mdvd. 
Miflh quaitly ookl pinlod 
contacii ontufa long 
trouble trim lilo Switches 

are. r«ca*a«rd Id avoid 

Kctdefilal operalioit 

P*uon«4 and budt In 



Brno* 
yaar 



GuAtontsad one 




THE VIXHH MDTHFflBDAflD £31 95 

T(4F EXPANDABLE EXPANSION StSirM 
r^ev^tna a •d&icul ewindga fon Ku5 ROM 
■ocur. Tha aWt «■ iwittnabi* vnabinp 
cartrldpn to be Wt *i place and talacled a* 
needed by iw U phan lha avotdai^ comtani 
handlmB xl trie dengv gt b*»»k»9e Having ona 
•achat at lha '•*< mnttitu tu-ih*! ■■p*nwwi U»*d 
«v safpjrttwn *nl» «n> or more Vi»n Hetna ful 
*>P«nvon can be achieved ROM Kctiet enaMa* 
DOUt ant Eproma la ba 'Jitrd fn- futuio wliwer* 

progismv iDOlklll Mr 

A in-rf* ol ROM baaad tafiwara wM u^on ba 
avaaaete from iha manuifacuiiera io*j»nv 
It*ndv4 (P'omp. ?7f6?7)J elc a>« r ( *d4t 
avaattxe and aawtv pfoara<iimad and (noted 

A aaund (fwaauneni fw ih* arnwi uw and 
•erwiM qentaa eteyer which *fl not became 




StHBaBMBBfeSatV' 



TRCtTIIVSR 



LTD. 




93A PACK LANE, BASINGSTOKE. HANTS. 
Tel. (0256) 66116 



20fl rOUR COMPUT EH NOVE M&ER 1 9M 











PRICES THAT'LL KNOCK 
YOU OFF YOUR FEET! - 



MWOO 

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Spa House 11 1? Worple Road, Wim&tedon. London SW19 4JS Tel 01-94; 

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OrthJis t12 of ovsr P&P ife« Orders undo* f 1 2 P&P £0.20 

Ptaase make cheques or postal orders payable to: 

SARASOFT, 29 CHESTERFIELD DRIVE, 
BURTON JOYCE, NOTTINGHAM. 

fw\**t ttm* »>M i OH. Mod S A F for «MW 



MAIL ORDER 
PROTECTION SCHEME 

If you order goods from Mail Order advertise 
merits in this magazine and pay by post in 
advance ot delivery, Your Computer will consider 
you for compensation if the Advertiser should 
became insolvent or bankrupt, provided that: 
( 1 1 You have not received the goods or had your 

money returned; and 
(2) You write to the Publisher of of Yovr 
Computer summarising the situation not 
earlier than 28 days from the day you sent 
your order and not later than two months 
from that day 
Please do not wait until the last moment to inform 
us. When you write, we will teH you how to make 
your claims and what evidence of payment is 
required. 

We guarantee to meet claims from readers made 
in accordance with the above procedure as soon 
as possible after the Advertiser has been declared 
bankrupt or insolvent. 

This guarantee covers only advance payment sent 
in direct response to an advertisement in this 
magazine not, for example, payment made in 
response to catalogues etc., received as a result 
of answering such advertisements. Classified 
advertisements are excluded. 



YOUR COMPUTER. NOVEMBER 1 964 20S 



Micro Markets - Specialists 
in the new MSX System 




of 



MSX represent one of the mosi important advances in microcomputing 
technology by introducing* compatible standard to microcomputers. 
And Micro Market!, at the forefront of this new technology are pleased 
(o be iblo to offer computers, peripherals and a full range of software 
for the new MSX Systems, MSX will offer the user a compatible 
programming language and therefore compatible software for all the 
MSX computers in the form of tassei te, can ridge and disk, van your 



nearest Micro Market store soon. 



Toshiba HX-10 Computer Including starter Pack 
Software £279,95 

A powerful home computer deigned to satisfy the first time user. 
enthusiast and businessman alike. Featuring MSX Basic operating 
language, a powerful MK memory and 73 Key fullsuoke keyboard, the 
HX-10 wiij produce high resolution graphics Including irafm and charts 
in up to 16 colours and full 8 octave music generation The HX-1ftis 
totally expandable and like the software, MSX hardware is also 
standardised enabling users to add a wide range of ptriprtei ab. Comes 
complete with starter pack of software. 

Toshiba KT-22 Data Recorder £29.95 

For the storage and playback of data on your MSX computer this 
compact, quality unit from Toshiba is ideal. Wan top-mounted controls 
tape counter and sound level senior which stops the Upe when there is 
no sound. 



A selection from 


our extensive range of 


MSX software 






Coco in the Castle 


£6.95 


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French 


Starting with the MSX 
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German 


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Spanish 


Maxima 


0.95 


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Champ Assembler Monitor 


Hot Shoe 


Package 


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Time Bandits 


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Micro Markets offer a full range of leading brand computers 




Acorn Electron Computer £199.95 



BDoaaeaooaMu- 
-oamoaaommn 







Accepted as the standard in schools and colleges for learning computing. 
The BBC Model B features the powerful BBC Basic programming 
language, 32K memory, 73 key full stroke keyboard, 16 colour high 
resolution graphics and sound synthesizer it has several interface parts 
for easy connection to many peripherals and there Is a targe range of 
business, home and games software available. 



Built by the same company as the BBC computer and therefore usestl 
same widely used programming language. The ideal machine for learn 
about computers, the electron features full stroke keyboard. HK 
memory, full colour graphics and sound generation. It comes complete 
wah 2 manuals: "The User Guide' *"d 'Start Programming with the 
Electron'. 




MICRO MARKETS 




Amstrad 

CPC464 

The complete system 
at an amazing price 
from Micro Markets 

AmstracTs loiij awaited entry wto the micro torn puter market in 
low cost computer that provides the user with everything to |USt 
plot-in and get going, with appltcatrans ranging from arcade games 
ttbusiness and accounting. Its impressive features include: integral 
RGB colour monitor or Green Tube VDU, 

r "speed load 'data recorder. 
MK memory, ?4 key full stroke keyboard, 

■ tolutkw grap h ics, ? octave sound 
generation md a comprehensive range 
d software for holiness, educational 
prut*, from Amsoft. 

With Green Screen 

Monitor £239.00 

With Full Colour Monitor £349.00 



* 



i 



- »• filll l»l 

. t * f » « « K J | 



Ork Atmos Computer — Phone for latest Low Price 



Unl^e other micros, the At mc» has a powerful ROM mumnry 
which leaves most of the valuable RAM tnemory for user 
pro£ramrnin.f, Then* art full eotour high r#K>iun<vi graphics and 
special sound effects for game* progrsurnrirrtwhifh cart be heard 
through the powerful built-in speaker. Other features include full 
featured keyboard with sculptured keys and a range of exciting 
software. 



Epson RXSOFTDot 

Matrix Printer 
Phon e fo r Low Pr i ce 



Tl 



Sinclair Spectrum 48K £129.95 

With FREE Software 6 pack (worth £56.70) 



M very popular 48K colour computer offer* excellent value for 
noney, featuring full colour high resolution graphics. 10 octave sound 
nrft and 44 key keyboard. There is a full range of per iphe rait and a 
noun* selection of software. 



Cumana CSX100 
Disk Drive £149.00 



Interface 1 and ZX Microdrive. £99.95 per pair 



For fast acces* to large amount* of data earn microdnve is 
capable of holding up to 10OK of memory on a single 
microfloppy disk. The Interface 1 will control up to 8 
microdrives and also adds file handling and communication 
facilities to the Spectrum. 



IQMDON 
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Audio Tibwi 

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All pr «« q iKUM In [Tit HKro rtj.nu 

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All Pr<«i include VAT « It* 

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i\ ill brjrwbn. 

Ple»w (tt«k b»for»tri»flirv|. 



A vail able exclusively from DEAN ELECTRONICS 
the well proven ALPHACOM 32 Thermal Printer. 
Includes kill interfacing to the ZX 81 or 
SPECTRUM. Uses the standard Sinclair prim 
commands (COPY. ILIST. PRINT), 
Quiet maintenance- free, high-speed operation. 
Paper £7.00 per box of 5 rolls, each 25m long, 

ttphacom 32 

This thermal printer, now available nj 
the UK, ii the standard prin tar which 
hat sold in tent of thousands for 
use with the American version of 
tha ZX81. 



SPECTRUM 




DEAN ELECTRONICS LIMITED 
GlendalePark F embank Road 
Ascol Berkshire SL&SJB 
Tel. 0344 885661 Telex 849242 

Or from w H Smith, John Me njsi at, <5r«nt, 
Laikvi, Spectrum Group, Pnim, Cufryt. 



| Plaaie send me ..„,... Primer (j) at £81.96 and boxai of paps? 

IB rolli p«i box] tt C9 par bo* - ell inclusive of post and packing. 

Tom i £ . chrtjue /PO ancloted 4* d>b«t my A«en/S*f dov 

cjrd account No „„ 



Name and addrtu 



iMr-rrari 




I Alio available - 

J AiohKom a4 compatible w>th Commouon 20/64, - 

I BBC Cemronici. Aiar, jt f 99 95 f +£2pta> include* jrlnctM mturfica. 



onoff 
re -set 

switch 

for 

spectrum 



■ No more crashing from 
worn power supply socket 

■ Does not affect expan- 
sion port and ute of inter' 
facet 

■ Jusl pushes into position 
doei not affect spectrum 
or power supply lead. 

■ No need to remove 
one* in position. 

■ Ergonomics! I y designed 
- no more fumbling with 
power supply leads. 

■ Positive rocker action 
prevents accidental opera- 
tion. 

Ideal for resetting rom 
cartridge games - saves 
lime when changing 
microdriye 
cartridge*. 




ORIC AND SINCLAIR 
COMPUTERS 




one i dnpM> *M (« iren r ics ow 

Atmo* COTWulM 4K n 71 IflMl MM 

Onr fOHv print* M H !|l!ll flM Ot* 
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Sprt|.un« UK iwrtl* B f«4> d»ci«ht » *rh*. 
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COMMODORE COMPUTERS 

ComfMMkm 64 fJO* If 1841 fW4 V< X) 

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L'lin'idgi ill ir?&M rJ* fr affU ff M Ti iU t ».] 

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ACORN COMPUTERS 

riKtwi r»a) if 2») r?J» tuciron i«fii«> 

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*«« s if" *o ti»t* www izoo >nB4k 

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««m5 PB1NTERS 




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Co wr m d w. 04 T4t IC41. 14ft w* r:*n 
MirA mmma ia t ro 1*1 «*■ n^c >«•*» 



SWANLEV ELf-OTRONlCS 

Tha Computer Export Specialists. 

Oapt YC F 32 Goldset Rd . Sirvanl«y. Kant BR8 

8E2 England 

Tel: SWANL6Y 10322) 64851. 

OffeU «rfn tHfemw IK vr**» mm wmm Ant •ntf mcaud* po«f and VAT 

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ImekgUff 4utinM Mel and Jmhiowi miuntf 4*>/n4J p^utgr 



? 1 2 YOUR COMPUTfB NOVEMBEB 3 984 



The Sinclair 




■■■■ 




Exploring the Sinclair QL — 
An Introduction to SuperBASIC 

Andrew Nelson, £4.95 

The QL has a rich, new programming vocabulary, 
and this great book gives you the chance to master 
the host of new words Sinclair has added. Sure, 
you can use the QL more or less iitst like a 
Spectrum, but if you do, you are missing the 
extraordinary power which lies behind the radical 
concepts of SuperBASIC. Command by command. 
statement by statement, Andrew Nelson takes you 
through the richness of QL SuperBASIC in 
Exploring the Sinclair QL — An introduction to 
SuperBASIC Just £4.95 and available from most 
book and computer shops. In case of difficulty, you 
can order it directly from Interface Publications, 
using the coupon below. (Trade only: Interface 

lications are distributed exclusively in the UK 
and Eire by W H S Distributors, Export 
orders handled by Interface Publications.) 



Interface Publications, Department QYC, 
Ml Kensington High Street, London W8 5NR 



Please send me the following books. 
I enclose a total of £ 

Exploring (he Sinclair Ob — An Introduction to 
SuperBASIC - Andrew Nelson, ISBN 907563 84 8 £4,95 

□ 49 Explosive Games for your ZX Spectrum — 

Tim Hartnell, ISBN 907563 53 8 £4.95 

□ Delving Deeper into your VIC 20 — 

Ph il ip C a mpbe! 1 IS B N 907563 62 7 £4 .95 

n Creating Adventure Games on your Dragon 32 — 

Clive Gifford. ISBN 907563 57 £4.95 

n Dynamic Games for your VIC 20 — Mamew Boek, 

ISBN 0907563 34 1 £4.96 

D Creating Adventure Programs on your Computer — 

Andrew Nelson, ISBN 907563 36 8 £4.95 

□ Putting your VIC 20 to Work — Tom Lau, 

ISBN 090756346 5 £4.95 

□ The Easy Way to Program your New Computer — 

Tim Hartnell, ISBN 907563 60 £3.95 

□ Creating Adventures on your ZX Spectrum — 

Peter Shaw & James Mortleman, ISBN 907563 589 £4.95 
H Practical Uses for the Microcomputer in the 

Home - David Hole, ISBN 907563 59 7 £4.95 

□ Mastering Machine Code on your Commodore 64 

- Mark Greensluelds. ISBN 907563 69 4 £7.95 

D Making the Most of your Tl 99/4 A — Scott Vincent. 

ISBN 907563 66 X £4.95 

n Dynamic Games for your Electron — 

Neal Cavaher-Smrth, ISBN 907563 67 B £4,95 

Q The 3-D Animated Apple — Phil Cohen, 

ISBN 907563 7B 3 £4.95 

□ The Art of Structured Programming — Peter Juht'f 

ISBN 0907563 791 £8.95 

Q Dynamic Games for your TRS-80 — Gail Duns & 

Tim Hartnell, ISBN 907563 63 5 £3.95 

Name 

Address ■ 



INTERFACE 

PUBLICATIONS 




oyc 



— — — — We're the experts! — ' 



Don't blame the 

equipment- 
it's most likely 
the mains! 

<n a penVr world, with a perfect power supply you'd have a 
'njht ' i expert perlert results from your computer, word 
if other electronically controlled 
<pment Sadly, this is not always the case, due to mains 
borne mierfpr eace Even a dedicated line is only a 
solution b?r a use interference is generated by 
being ised around you, typewriters, 
< u * n «>gtit^ and ei/en the office fridge. 

Galatrefc do have an answer — 




the Ferro Resonant Line Conditioner. 

!he mams and your unit into the socket 
■ ransients and other mams borne 
interference arp now trapped in its circuits and voltage 
•■s or dips are also catered far, as the output is highly 
rdsed. It also protects itself and the equipment against 
overload and gives system isolation. If you specify when 
ordering, ft can be used as a step down or step up voltage 
supply 

early arrived at your perfect world — for as little 
as£U5 i \ 

The Galatrek Filter Plug, whilst only rated to carry 
2 amperes of current, is designed to protect micros, minis 
and word processors from 
interference and surges 

The trarsverse and rommon I' f JTT T i TfT l 

jits' ffiffrrffl 

are very effective for these jm|^j| j^ 

low powered units Easily 
ttted it simply replaces your 
existing 1 pin plug 
Price £19.95+ VAT -* 



Spnd for details or casli with order. 



Master Distributor and Dealer applications invited. 







ALATREK<4r) 

Galaireh International Ltd. 

.'«dd. LL26 OAL. North Wales. 
403] I Telex: 6171 14 A/8 GALAHU 



COMMODORE 64 

BRING YOUR 64 TO LIFE WITH...... 

LIGHTNING LOAD 

* CONVERTS ALMOST ALL YOUR FAVOURITE 
SOFTWARE & GAMES INTO A SUPER? AST LOADING 
VERSION 

* YOUR CASSETTE PROGRAMS WILL INDEPENDENTLY 
LOAD FASTER THAN THE COMMODORE DISC DRIVE"' 

* LIGHTNING IOAO HAS SOPHISTICATED FEATURES 
WHICH LEAVE OUR COMPETITORS LJQHT YEARS 
BEHIND 

* COLOUR 6. SOUND ARE USED IN SPECTACULAR & 
UNIQUE WAYS TO ENHANCE THE PROGRAM 

* 100% MACHINE CODE. FLEXIBLE MENU SYSTEM 
ALLOWS SAVING OF MORE THAN 4BK CONTINUOUS 
RAM 

* THIS AMAZING PROGRAM IS NOW ON SPECIAL 
OFFER XJ-OT' NOW C6.95 md P&P 



COPYCAT 

THE ULTIMATE BACK-UP TAPE COPIER 

• MAKES BACK-UP COPIES OF ALMOST ALL 
SOFTWARE 

• SPECTACULAR MULTICOLOURED LOAD AND SAVE 

• WIZARD AUDIO SOUND EFFECTS 

• CASSETTE MAGIC SENSE 

* 100% MACHINE CODS TAPE COPIER WtTH FULL 
INSTRUCTIONS 

* CAN YOU FIND A BETTER COPIER? W£ CAN'T' 

• SUPERB VALUE AT £6,95 inel. P4P 

DISPATCH OF THESE PROFESSIONAL PROGRAMS 
WITHIN 24 HOURS' 
CHEQUES PO.'s TO: 

WIZARD SOFTWARE JOept. YC> 
99 THE MARLES. EXMOUTM, DEVON EXS 4NE 



MAIL ORDER 
PROTECTION SCHEME 

If you order goods from Mail Order advertise- 
ments in this magazine and pay by post in 
advance of delivery. Your Computer will consider 
you for compensation if the Advertiser should 
become insolvent or bankrupt* provided thatr 
1 1 ) You have not received the goods or had your 

money returned; and 
(2) You write to the Publisher of of YtHM 
Computer summarising the situation not 
earlier than 2B days from the day you sent 
your order and not later than two months 
from that day. 

Please do not wait until the last moment to inform 
us. Whan you write, we will tell you how to make 
your claims and what evidence of payment is 
required. 

We guarantee to meet claims from readers made 
in accordance with the above procedure as soon 
as possible after the Advertiser has been declared 
bankrupt or insolvent. 

This guarantee covers only advance payment sent 
in direct response to an advertisement in this 
magazine not, for example, payment mode in 
response to catalogues etc., received as a result 
of answering such advertisements. Classified 
advertisements are excluded. 



?1* VOL* COMPUTER NOVEMBER 19B4 




Oo 



NoLTaoh 




Have an adventure of your own 



Th# fifii adueanaoal adventure generator* of thi«f kind. EKh 
program come* complai* with twd advf-oiLirffa which wUI 
prolate houtt of caoiTciKl<v« uu and anmultta for other 
activities. f*tg* the, facility to rretta yeof own adventures 
including your own c run acta/ru and locations, Af! venture* can tn> 
saved on to Tap* Or dime tor later nil. No ptof^arnfftiftf 
necetaan/. E**v to use. 



Your Adventure 

A first lavol adventurer generator for 7 to 13 year OW*. InclrKling 
colour graphics, map, planning ihaat and IijH w-itructton*. 
BBClBl lap* or ri.se, RHL 3302,4807 disc. SPECTRUM aft* and 
COMMODORE 04 rope £ 10 SS 




|ntir Abtrrntarr 



Mpih#mag« Land 

A lughty eternal mathematical adventure for 1 to 15 year cftfe 
w.tti 3 leveli of diUiCvUv and *V*r changing problems Can be 
used again and Again A simulating and absorbing gam* 
BBC 181 tape or disc SPECTRUM and COMMODORE vai 
Blamed f 8 96 





varnoni 



Space Adventure 

A HCOnd level adventure generator 'or £4 to 14 yi-ar <*Ws 

allnwinc the ct ontmn of mora CQrnpitcaiffl adventure* Includes 

colour graphs*, animated r*wrud planning tieai and fy' 1 

SHCIB1 tap* of dine. SPECTRUM 48K anfl rOMMODOftF tope 



Developed by experienced leather* through the 
Govommtfii i MiCfo*1«:tronw.* Education Programme 



Learning and Training Systems Ltd. 

Havdon House, Aleesler Road, St utile v. Warwickshire B80 7AP 
Tel: 10386) 792617 



Diteaunla for school* (final education orde« ar rented 
Ovartaaa price* on application 

AN prices include VAT. Pottage f 1 00 for t program ft so for 
2, C2.O0 for 3 Of mofe, 

tTS puhhsh a wide range of program* lor Eog'itri Matm t)a*ic 
Skil>», Problem Solving, ate. manv sponsored By ttu 
Government's Mie*o*l*etron:>e* Education Programme 
FuB catalogue available $ A C plea*« 





7** j*km r powerful fdo/Atf ><f f /far ZX BASIC AS the ftviurei 
you w(W «*r fimf; jltrT0 tmrt, fuB RENUMBER, block 
DELETE, CLOCK, ALARM, cmv trvppimc. break trapping 

(■'tit! TRACE with tingle Ufp and much, much marr Makes 

It BASIC eatv to-uit and powerful 






IBO KMjh Sirs** North 

OumtpWf. B*4i, LU6 1 AT 
TeMOUlleWH 




£M 

>,* excellent attembfrr. an advanced tint editor, a camper 
Henare dtutiembler and a superb 'front panel' debugger 
all in one package. Vtad by men v leading software houtet tit 
writt their gtmes. "Buy it!' Adim Denning 1984, 



£25 



A powerful and almott fliil (mplemrnsarkut of Petal ■ not 4 
Tiny Paicttl A valuable educational and development towl, 
progwnt typically run 40 if net fatter than a BASIC equivalent 
Spectrum tenio* includes Turtle Grvphlct package. " I haven't 
teen my other compiler that could match Hitofff Payed" 





for the ZX Spectrum 

HitOfi it pleated to announce a Mi compter for thli popular 
tnd effective tytiemt proffttmminf: language fiat * tiny C but 
an exlemh'e, miy-to-uu Implementation of the language 
Allowt direct execution of compiled ttatementt Supplied with 
function Ubrary. Atotlabl* direst flvm Hi&ft for Oi.OT "rite 
foe further detain 

All prices, UK deU»e*td, relate to 4a K ZX Spectn/t* ventont 
Our »/ruwf it available for manv other Z80 maeetmrt eg 
Amttrad CPC 464, MSX. Memoteeh. SHARP ¥7^00 Vev. 
Brain. CPfM He. PUmr write ford*t*ttt 



TOUB COMPHTFR fMOVFMBFH 1984 fl* 









The problems of looking 

" after your Micro 







••• 



tuan% .1 pt ■ 

few tii their own. 

;-i wlirn ivcw In 
w lien Wum'n kzni tig t he loti i 

shnwmj; it hi'. .1" '■ 
cruurc h ii l< 
P.i . Unkeit Jouti !■> thv 

'-. S. mlittnji time nn>l>. 

h.tvr • 
HiprrNy mode : 

limit! lid 4p*l II ' 

».»>e u tonnrmtcJ fro 
fibfth%irJ h.v% i ImI 

linilVit j ,>^^vlu^; km Hr -r-.tctnal 

ling i 'ui'ir nu^la^U-iung hJ 

and a pfim- • even Mir i 



Mr»t* hprlps L Jul A Lvn| luhfcrmx Vlfcfi 1 - ■*«-il«f a 



vrfoqurT 
SAME 



. J 



I 
I 



PASCOMl'l UK I'ftODU. 1 S UU1 1 ( n 
ITflT HtjCtSTItAL TRADINO tSTATt, 
ST41SES, Mir>[W.ESEX Tft'id *V\ 



J 






21* YOUR COMPUTER. NOVEMBER 1 &&4 



What s New For Christmas ? 
See For Yourself 



The Christmas 




GO ON A SHOPPING SPREE FOR ALL TOUR 

NEW SPECTRUM AND QL GOODIES! 

- MANY AT SPECIAL SHOW PRICES - 




TWO FANTASTIC DAYS 

17th and 18th NOVEMBER 1984 
AT ALEXANDRA PALACE, WOOD GREEN, LONDON H22. 

AD MISSION 0IU ELM(Mrtb) ELM(KMl) 

Come along on Saturday or Sunday 1 7th and 18th November to 
the Show that shows you everything for Sinclair Computer 

■iitwiiwtil 

Why spend weeks looking for Christmas presents .one day at 
the Christmas ZX MICROFAIR will take care of everything' 

And you'll have a fantastic day out mealing friendly people , , 
having fun . . . full if Christmas cheer! 

Send now for reduced price advance tickets - and don't forget to 
note i he dale! 



SEND FOR REDUCED PRICE ADVANCE TICKETS 
NOW AND BE FIRST IN THE QUEUE! 




UIIMKHM HUMS. 
WDM OKU> UMMMH2Z 
UTUfMY JUH SIJNMfr 
Un md 111* HOyiMKI 1M 



EXHIBITORS! 

JOIN THE RUSH . . . CALL 
MIKE JOHNSTON 
OR MOIRA ON 
01 801 9172 FOR FULL DETAILS 
OF STAND AVAILABILITY . , . 

0QITM7H" 



I 



Post to: Mike Johnston. ZX MICROFAIR, Oept YC. 71 Park Lane, 

Tottenham, london N1 7 OH G, Tel: 01 801 9172. 

Please send me ADVANCE TICKETS for the Special Christmas ZX MICROFAIR 

I require the following:- Adult tickets § 11.25. <.,....„.. Children's tickets @ EO.BOp 

tor Saturday/Sunday ( Delete as applicable ) 

I enclose cheque PO made payable lo ZX MICROFAIR for the full amount (please include cheque card 
number on the back of cheques) and I also enclose a STAMPED SELF ADDRESSED ENVELOPE for 
return post. 
Name: 



Address 



rT l ^ l f l firir..n r 



■ iniriiriri^irii^iil rr IF i r< •iiripn l H^btltti+Hlb(ik^k*lTiFTr mrmnn 



I 
I 
I 
I 
I 
I 
I 
I 
I 






YOUfl COMPUTER, NOVEMBER 1 9(W ?1 J 




TOP 

SHOWROOM 

SERVICE 



ROCK 

BOTTOM 

PRICES 




The UK's Best Printer Prices 



Only a sample of our massive range of printers 
shown hope — phone for further details 



DAISY WHEEL LETTED QUALITY 

S»n*fiCowsTfMtPorS> CIBJOO+YM^ €217.33 

j u t-610DfPJ L33SQ0tUAT- £3*5 25 

■Brother HRISIP) r.33&00 + V«T £3*3 25 

Dwystep ?0D0 C239 95 » W - £27 3.94 

PRINTER/TYPEWRITERS 

Brother EP22 Dm MinniiSi tl I9QP«UH- E 136 85 

&roeharEP44(S) C189Q0 ..v £217 35 

Modem* avwlacitr frjr E*»ytreV and Trlecom OoU 

.Jui.220QD«prfiMl{Par5) C23995+VAT = CZ75 .94 

DOT MATRIX PRINTERS 
D j uUmi HBBfPprSl 

Cam laraA Mags 

C*w 1156ANLQEP1 

epson nxeotPf 

EPSON RXSOF TCP! 

EPSON pxsq w 

EPSON AX 100 F TIP) 
EPSON FJtlQOFT(P] 
5^t*shaGP1QQACP) 

S««tosh*GP50A[Pt 

S**os*w GP50S (Spectrum) 

Sokosn« GPSOQA tPl 

■So*aih»GPS5QArP) 

5*nwru> GP 700A Colour IP) 

9rm»CTiO(P9 

TPl- P m tM dr monci . IS) = Ssnat RS232 

Sfwh Corena rargt o* (miters No* m Suck Ptwr*or*rileforoeta*t 




€142,33 
£322.33 
€401.35 
€224.23 
CB3B7S 
£372 BO 
£390 33 
C 504 83 
€143,39 

C9i aa 

C913S 
£160 89 
E20E 89 
£331 S3 
£201 25 



INSTANT CREDIT Up to 36 months to pay 

kll iien is over CI 50 available on our easv credit terms. 
Written del ail a available on request 



SUPERDISKS 

LONDON'S LOWEST PRICES ON FLOPPY DISKS 
Prices per bo* of ten ex W 





SSOD 

40TR 


QSQO 

40TR 


SS96TP1 
BOTH 


0SS6TP1 
BOTH 


BASf 5V 


C1M5 


tiuo 


C19.N 


£22.51 


M 5'« 


C13J5 


cirst 


£20,05 


£2400 


VERBATIM 5^ 


£1*JI 


£23.5* 


£22.81 


£3151 


CTSANSV 


HIM 


tiAM 


£2490 


£32.0C 


1DK5V" 


£17.50 


£2550 


- 


£33.00 ; 


BASF3V 


£34.90 | 


- 



Add 70p for P6P per box of 10 disks 

CASH 8 CARRY COMPUTERS 

53-59 High Street, 
Croydon, Surrey CftO 1QD. 



onifN scnffM 



i5g£!lS!3RS 

M'HOMTtM* - CO Our 




Sjni>JH5t*ohF 



ftu* 4 WW W« nunpuur 

801 *Tittar Bfrtflf 

eCe Fmun ntotf FWicet 

1 ptS Cdcsur Rnrur Pkgtter 

1701 CAwf Mentor 



EB03 Ifl 

[1H1S 

u 
is 
it 

5 45 







tern so 

C3U 31 



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rtfiyilngft<n%.L*' 



ELTftStwir 



- .'<>, fl ■ -.A- C*i4 7i 




ETC 

T331 70 • * 

a ■ ?s ■ s 

€43474 4 VA 
^tfo>*Cu"W%»CM> OrwoOutfcCJO* *>Mnuri< H)rm <M» 

StwtVumJHi. <-eFfiniG«Tvtt<Mirtfi{9SI 

HovtM 




iris 1 



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BUSINESS SOFTWARE 

Aiimi«AiwBi^bdnwHlt«niivQT<iai)K<iiM|nn 
MrM> 

Ssffsr 




f rim*?i«rjr% 

n>wmWBWTiBMi»''*i>Tt>»tf<^ir>dw*iewcrairiwa 



CHS 

C3»0 

C2«a 

C4»0 
CZ40 
t>*0 
CM1 
C13S 
CHI 



ft/la it OrdertExport^Thade 
Hat Line Phone 01-6B6 6362 



VAT jier it£m 

(AT per iwm 



Smxl oil she coupon or order by phone quoting yo\jr Access . 
B#rctevc»rrJMfl ThoneOl 6866362 Immertrte 
despatch on rftcac*. erf order or cheque decree 

Or you can Tele* vow order on 946240 Attn 19001333 



■nd Ea-t: Mitral «tu t* w> ^ct 

T>—i y* M comet iftf wj»T3— am in j»h »* miihh 



rcluVxj 



PtStewn si TNT" 



:o [jinii L«t-, Cou«)ut«» S3 39*Hi(|i*Stror( OdvA^ &j-'*i '.:' 
■ FV iMmpV . 

I i«nouanrtcnMwlor[ 

| -*. . 

I W * > — 

rfwaa 



SW*ii 



.mil 



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213 YOUR COMPUTER NOVFMBEfl 1984 





oaore64 



"Absorbing and realistic - 
Highly recommended" 

- Sunday Times, February 19S4 

"Completely fantastic - 
I want one!" 

- Charlie Nicholas, Arsenal striker in Big K t 

April 1984 

Having chosen your players 
the match highlights are 
then displayed in very good 
animated 3-D Graphics. 
. . .There are many other 
excellent features in this 
game in fact the attention to 
detail is outstanding 
(5 out of 5)." 

Popular Computing 
Weekly - ^ — ^ 

J 6 August 1984 




Some outstanding features of the game 

• Matches in 3D graphics • Transfer market • Promotion and relegation • F, A. 
Gup matches • Injury problems • Full league tables • Four Divisions • Pick your 

own team for each match • As many seasons as you like • Managerial rating 
t 7 skill levels • Save game facility • Financial manipulations • 4 divisions and 

customising feature • You can even be sacked! 



Available from computer software stockists nationwide, including 



K'iifaJiiuif 




Prices: BBC Model B £7 95 
Spectrum 48K £6 95 
ZX8t 16K £595 

(K& 30 GftAWCS ARE NOT iNCLUOtO IN 
THEZXeiVEBStWO 



To order by moil (p§p (re*) t*nd cN*qu*» or 
PQittiJcxdwtTo 

Addictive Games 

7A Richmond Hit. BOURNEMOUTH 6H2 6M t 



ALSO FOR 

BBC 32K 

SPECTRUM 48K 

&ZX81 16K 



NOT JUST A PRETTY/FACE! 



T~" his superb new interface is one 
ol out v*ry fatesl developments 
lot your Spectrum 
Offering even more features and as 
rf S pr ogrammabio Iron (tie keyboard 
or imtMhe cassette supotted yw win 
now use it **th any software 



FMtlireg Inciudc: 

* 1 7 dtftcuona! movement 

* Keyboard luily Functional 

• Hew connector for other add-on 5 

• Microdrive compatibta 




HOT JUST A PRETTY* FACE! 



The Spectrum dual port 
toysiich iniertaco a a nighty 
versatile and pre* 
compelidv* joystick mien" ac* Offering 
two joystick pons 

The Urst pod ShyiuI41« 6 7,B,9„ & 
Keys Trie second port simulates «n 
|31) command. 
The ports will accept any Atari 



styte |Oys(<ck 

Ir will run any software. Thai «■ 

• Using keys 6,7,0,0 & 0. 

• Having reoefinabta key functions 

• Ufmo.tn'3t|(iti Kemp&ton| 




Mbe* 



W* 



NOT JUST A PHETTYjtFACB! I NOT JUST A PRETTY PACE! 



Tn* flew ttfrortiC* ParalWI 
Centronics inlerto-ce *m link 
your Soecflum to any ptirrte* 
with a itanda'd eenPremei mpul Aj 
ir* cho«ce u ms. you eon t*l*ei fn* 
pr niflf wjcrtv KHt*d to yOMt ne*dl 

• MmHBiiHiiita« w «g>Hw 



pnna* chcywal «.g lecwora Or pocli 

Me, 

» L1.J41 iPWNl *«f>jn«#<j rfcghm 

-wsr coon o i w * U twougn Kt 

pri"*«» 
■ fuflv mnieoiw* eofnpoti&« 
* S*POMd*ilhMln*»mpl*»**M 

eanMiang tototar* 

OXlOOJO O"o*ic1 en eM«M Of a 
ih£nj)wwv* QuOWria* 



campr 



v Qpi^oatoiQ mrhtv luvv 
• inaKtoc*i*iwir)«via*wai* 




Oyi! p»n Brut nartaca 
a OdVSnw iO*ci*e«a> *>• H " 5p*clrum 
■nil SOU Qlwn le pMfMi«f far 
HXnVtK* *CCufaC» 
No* rov can pro*** l«ati fMOUMn **■ 
ivOiHwIA 
1 norr. m* ttiMA «*WC*W 

** Din B*tM ■!» Mi** v 

«teur, mHrt taxi itt »*■ nN» 
faj 



pantatv conpitfefl KrvWH. ««$ and (mm 1 tap* 
and •*! i i«K Spattnim renin tenant •» 
■wwy am) *n<maM 

Vnu«jnaMaiaaPw«natiM*«oaaiiii r*» 




Please rush me the following: 
r / Programmable Inieflace(s) 

¥ / Dual Pori Inierfacef s> 

V Parallel Centronics Interfaces) 

/ . Light Pen and Inteftace(s) 






V Signal u re 



/ Pleas* add post and caching £ 1 25 

ryr > enclose cheque/PQ/C ash fa* Total E . 

or debit my ActesVBarclaycard Mo | | | | 



V 



Name 



/ Address 



V 



V/ Or send S A E lor (he New D K Tronics Specirum C dialogue yc, 1 1 taa *o 



j* 



OK Tronic* Ltd., Unit 6, Shire HIM rnrJuitrfal EttMie, Saffron Wjtlden 
Essex CB 11 J AO- Telephone; (0799J I4J50 |24 hrj} S llntl 

TkS|)e(^ttUR(^KHfiCliCK 



THE FINAL TOUCH 



w: 



ma c aa cam rr.»«. »■> sur* ho™ »w 

«** <*r*r Ifl * PTC* nift »rw1 *<* llCfCKi 

SwwrtHinjwnfcitwiHWhgii*™!! 

CMC* M& «« tata VCtit loacttini v«g •■■ 

that U "U m pirf w b*ji ipoc* w * 

HOD* runp< It, pod ccnukng a !Ji« 






JZJlj UMIV- 

>h**V .'jl <Ovrwr»< 

A» tt'vw 1 ^^ O0-* . Me tor f V **•.« 
BO? una nmw «m" or* K{m«* a* 
hw 

tk*FWnM Gxmd«i«and ►* **)&* 
rtfw^ri M i| *ir) a. nmou Im <m>M 
tt**igjie*um ^^ 

com EO Hara W au la am i 

All connoctrons 
accessible tt tear 




FOLLOW OUR LEAD 

FOR THE 

RIGHT CONNECTIONS 



MICRO DRIVE 
EXTENSION LEAD 

Ttwawifl" »««iofn)i tta «w» 1 8 «*( 
OnnrlMd SmdWt 9n4 * only *" king ■« 
fC iraw, «SP*rt'iCini lfw» «n#y re* t* HJf«J 
«nougfi n*ri*r*rtyeuk>K*tvin*mroc 

Oft* nuch MttW n*y taynntrlK* 1 



56 WAY RIBBON 

CONNECTOR 

T*i*in*d«iMnuhnHniWi 
Spectrum pinphvii*. ftj o* WMM .1i ^ 

Ml lHW r "i *mrjn> «] <n* iltm matr 

* tomato onwtrjRi »» rrada » ft* 
aonptaaf 




WINNING 
IS WITHIN YOUR GRASP 



SOUND IDEAS FOB TOUR SPECTRUM 



Ouickshot Joystick I 

• Super pwnive response 

• 2 hre buttons 

• Siafrii&rtg suci>o*i caps 

• 4na&*] 



Ouickshot Joystick II 

* Improved control grip 

* Trigger lire button 

* Rapid lifp option 




Trirt* Channai Sound S, hT'B-s. s«r 
llmTll n::rjca'B5 a 5£t ; ' 
tuda •mplit-*r *r« t 3 chmrHil 
■OufKl iyth«i5»r 

Th# BEEP ampiriaf improrwa tfta wsunrj 
:j v, ar d c-u1? j" 6' ",*» BEEP 
»rvrjf mQy#ly Tlit 3 Cl»an«*l lOund 
*y*iri#a>aar KM* ■ totally rvtw 
daflanftQA to pound 00 you' SOKlr jrr 
tl **Crwt you TO yop /tm your own mLrl>C 

witn ritfmorikaa. a*p!c*cn* zaoi. 

cJi.r*«a *tii«tet and an inrmt* rang* 01 
e!«»' tou-ndi ovt' a f ufl 1 octavai 
8*a»d •rottrvd ttn popular AV3.fle,12 
sound crip n grvaa yog comptan control 



jrrom Dirt or W'C> ov*r J chanrw* oi 
ton* mdi'or *-tiitt rxM*. o ul fflwaiop* 
and velum! cotiifoI It comat w!h rt'i 
own pod mountiH] {*') apaaktr *,ln 1 
mutra o' tad* to tn«t >1 can m 
rxia-vonad §.nywn*'t 

Orvo* iMi 4 *:« re in* •xpan»on tw: 
yOu r p-cg-nm-ai « II navff t&una lfta 
»an» aQi.n 1 




V 



V 



V 



V 



Please rusn me the following 

Microdrive Compatible Keyboards ) 
Microdrive Extension Lead (s I 
56 Way Ribbon Conneclor's) 
Ouickshot Joysnck(s) I 
QuicRshol Joystick(s) II 



V 



c_ 



Yj Three Channel Sound Synthesiser 

ry Please add post and packing 

T / \ enclose cheque/PO/Cash fof l _ m _ l __ r 

r V OfdetMtfnyAccess/BarclaycardNo | | | | j | | 1 | | | | I I 1 I I 

V Signatgfe 



£ 1 25 
ToiaJE. 



V 



V 



Name 



/ Address 






Or send S A E. for the New OK Tromcs Speclrum Catalogue vc n rm ^ 



i. 



OK Tronin Ltd.. Unft b. Shire Hilt Industrial Eftate, Saffron Wald«n, 
Eiieic C61 T 1AQ, Telephone; |0799| 263 SO (24 hrsj 5 tlnti 

TbS|>e(i«u»tCr€W(Gciu)K 





i 



"* 







£ 




LVI 



D Please send me yew free catalogue. 
Please $end me: 

COMMODORE 64 BOOKS 

PCwtiraod«*&JCim«a«*? EG.9S- 

D Superchjrjf Your Comrades W £595 

DComi»io*>rr64Sarr*irfP l roiK^ £635 

□ComplrtjCoPiinodoffMSrCCourw £995 




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SPECTRUM BOOKS ■ ■*" rr ** M "* 

k JttftttoMlonDJHHTD 

ROOTS 

□SwdfumSotrwiePUDftctj £695 Cwmpowtoate 

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2* ten nut <»»[&?!};. 13 »0! 




IBOURNE HOUSE ! 




Commodore 64 Games Book 2. Just when you thought it 
was safe to go back to your micro . . . here's 30 more exciting 
new and original games for your Commodore 64. Every 
game has been specifically designed so you learn 
programming ski lis as you go. There's arcade games, 
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yourself. Wrth CHEXSUM, typing in is easier, and mistakes 
are quickly tcicated. A must for all Commodore owners. 

S peel ru m Software Projects is a spec i a I book which wrl I 
enable you to create useful programs and learn more 
about program m i ng , 

Software Projects gives you program ideas, discusses the 
Overal I set-upand an outline of the various procedures 
You write the programs, and Software Projects tells you 
how to test it or offers hints and clues on how to do it. Create 
s*» useful programs, ranging from information 
management to business programs and games. 

Z80 Reference Guide is an essential book for anyone 
involved in Z80 machine language programming. The well 
laid out format of this book will make it clearer to 
understand the capabilities of the Z80 instruction set 

All opcodes are H EX and decimal, making machine 
language programs for basic programmers easier to 
implement The Z80 Reference Guide is an indispensable 
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programming skills. 



Building Blocks For BBC Games is the book for all BBC 
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The ready-made building block system has all the 
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in novations i nto com plex and excrti ng routi n e s 
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ena ble y ou to lear n more a bout your m ic ro t han you 
believed possible. 

The Complete Commodore BASIC Course is a 
comprehensive book which will immediately become an 
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programming, All is revealed in our easy, step -by- step 
guide with programs and "test yourself exercises. The 
appendices explain the major pitfalls that you may 
encounter in each problem. Even if the idea of writing 
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complex programs. If you want to learn to program your 
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You'll see the difference from 

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We keep our flights of fancy for the game. 

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a true representation of the 

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Here's a sneak look at three of the NEW games ; 







1 1 J i - 1 1 




1 1 


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M" I^Eftr 





BOOTY 



Weil shiver me timbers and splice the 
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Blamed for a murder you did not 
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BIRD STRIKE 

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Look out for these games in the FIREBIRD silver range at selected high street stores. 

SPECTRUM THE WILD BUNCH BOOTY MR FREEZE TERRA FORCE VIKING RAIDERS MENACE BYTE BTrTEN EXODUS RUN BABY RUN 

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There are twenty games now available 
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FIREBIRD SOFTWARE WELLINGTON HOUSE. UPPER ST MARTIN'S LANE, LONDON WC2 9DL. TEL: 01-379 6755/5626 
Firebird and the Firebird logo are trademarks of British Telecommunications pic 



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YOUR COMPUTER, NOVEMBER 1984 ZZ7 



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A RANGE OF SOFTWARE SELECTED RY KEVIN TOMS 

"Over the past few months many people have sent me the 
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'A 2 Of mo™ player Boning gemo in which you 
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"A very useful utility program which allows 
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ASCOT- "an excellent horse racing gambling Ju 
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alall.a? 



OHACUIAS CASTte - "This la a^ arnysmg 
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J_ CHAOTIC CAVERNS - 'A highly addictive 
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send cheques/ P. O.s to: 

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Two new tapes available in November-HIGHWAY CODE 
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Rose Software 



143 Widney Lane, Solihull, West Midlands 
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ACOMPLETE COLOUR MICRO 
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The title of 'genius is not bestowed 
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arc ran 

Einstein had them iiifu^ measure 

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Einstein was created by Tatting, onc 
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lt£ simplicity ot operation will appeal to the first time buyer 
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HUILT IN mK MEMORY 
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J M BUILT-IN DISC DRIVE 

500K 3" compact floppy * I 
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extra Storage with a second 
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BUlLTdN 16 COLOUR 
GRAPHICS High resolution 
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ffTfjffif 



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BUILT-IN EXPANSION I'l 1R I S 
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Powerful Crystal BASIC. Multilingual plus ability to run C 

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instein 

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4 A iMtirta arcade advapluravril 
iwetllhcl mt'rdiahip>ahta 

• GanwSawUnlrry 
F I aUltcnJ l ipid I tm&tfl tftltm 

• MOu*io«*frdet«iittfl«c<t>« 

*aaj4f**tttil CCnUinhi 
tgrpriset ami n>Bjf**ln u 

nrceMaryWCWnptol* 



T^OttHdUltctiM. 

• Irfltractrvr (C*01t- 

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IfCIMlY 



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YOUfl COMPUTER, MOvtMBC ft 198* 231 





HQU OUJN A COMMODORE 64 OR UIC 80. 
BUT ARE HOU MAHING THE MOST OF IT? 



YOU SOOn WILL BE, WITH ONE OF THESE 
BOOKS FROM CORGl/ADDISON-WESLEY! 

Each otic is packed with a stunning array of arcade games, 
enabling you to explore the full power and potential of your micro. 

* All the games are in BASIC, so you can modify them however you want 

# Each one is listed twice- once for keyboard use, and once 
for use with ajoystick 

A DAZZLIMG SELECTION OF GAMES AVWVIT YOU! 



CORG1/ADD1SON-WESLEY 

TOGETHER, 
THE HEW FORCE IN COMPUTER BOOK PUBLISHING 



._LJ_1_L-_;_1J_J_LJ_L_LJ_L1_U_LJ_LJ_LJ_1_L_L 




All these books are iiViii laofc ill you r buokslwp. itxxigfl should you 

find any difficulty in obtaining llicnl, I hey tJm be ordered 

efftett from the publisher Simply lill in the fomi below 

Hcaacicndme 

I J* * Arcade Games for your Vie 20 alM S5 1 1 28 pages) 

1 25 ZAnrjKlc (James for your Commodore 64 at £4.95 1 1 28 ivjgcs 1 

1 27 9 Mot* Arcade Qsmes fot your Commodore 6* dt £4 , 95 ( J 18 pages! 

Mease .illcwtrotofboofcftjnlurt^Op lor one hook plus Up for 
cdchdodlttorul booh for ptwt^gc *nd pjthlraj. 

1 enclose my c hcque, jxnlal order (or | 



nniOl K CAPITALS ItCASC 



SfgnerL 



.OjIc 



Nnt 



Address- 



payable let: TKAMSWORLDKJHLISI1CRS LTD, 



How wnd mCOIKil ADDlSOfl WESLEY BOOKS, 
61 GiUnDtldQcftoj*! London W5SSA 



® 





H 



j 



(OcO>l^IIF > IDr ! ar , I^I^IE5^\.i 




ALSO AVAILABLE - 
Optional adaptors for 
Sinclair Spectrum 
Commodore 64 
Standard parallel printer cable 




IBICO'S 

New Letter Quality Printer 

Model LTR-1 

Professional standard* at your fingertips 
for letters, lists, files, addresses etc. 

ft Compact 292 x 57 x 165mm 

vv Takes full Ad sheet 

ft Continuous or manual feed 

ft Elite type 12 pitch 

ft Parallel and serial interface 

ft 80 Columns 

ft 96 characters 

ft 12 CPS Bi-directional 



K 



Computerbase Dept YC1, 21 Market Avenue, City Centre, Plymouth PL1 1PG 

Computerbase Dept YC1, 21 Market Avenue, City Centre, Plymouth PL 1 1PG 



tattoPnmart 

Adaptor tot Commodora W 

Adaptor lor Sm<l*« Spnt rum 

Pf*l\r\ *Finl*f Cafei* td Rj 

landoit lOwflua/pr Portal OtdaHo' 

drtlmr A««vfljf(iar£jrdUnf £«pi'ydit» 

Atri>jnl No i.. 

N»*+ .___^________-_ 

Bf4rr*ry*d4<*tt 



,Cofn|nrt«r (tut* compuwrmikft 
m*d* iMyibi* to Computatoata or 



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fltt.M 




M1.70 




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BETA BASIC 1.8 

ENHANCED BASIC FOR SPECTRUM 48K 

FOR GRAPHICS - STRUCTURED PROGRAMMING 
- DATA HANDLING 

W i n * 1 8 * runt powarM than rw< Wa don't hawa apaca to do ihta prograrn 
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wha n m a a 

Fxtvn Command* »r» aa i gla a r Ury taynordi m o<aat>Je* mod*. St-ntaj >• 
<h*c»*d an anvy. Fu*y compabMa *>in Spaetrum &aue Uter odrtaa foment*!* . 
Cama^fiananrf manual 
MDTf m u m 1.0* at* avaaawa for 16/48K Spaeifum at €11 00 









laMUHw ini» 






IMrflMM »■ 



OTT« 



m» M 1T*» aw I 



FUNCTIONS 



m ^jiB.iKf 






dm, en oo oeiuih*i mnarad* pnea Ten Raiaai* 1.0 trtrmtt la ta 00 tMl 
ndudaij 1Z p*9* mp pla m ant to yom manual P<*aa* guola data ol pyctia** 41 
yoj did net pwchaia from us. nai* aupniax and Htiufft «»pm*i eatiaita i 



***** aandma 

■ttaaavc. H aaj a aa 1.8. Ravmajni ol (1 1 00 v anctaaad 

Ky ( 1 1 SO for ronton o*d«»ir Cnaoua* oavatH* <o Ott A SOFT 

loon i ba**v« Hi IVaaa aand m* r u ii rjauvi of &»ta bale 1.8. laneioM a namnad 
MOaaaad an n ate* 

NAHf 

address 



BETAS0FT 

92 OXFORD ROAD, MOSELEY, 

BIRMINGHAM B13 9SQ. 



Having obtained the upper hand in this 
desperate desert battle, the enemy 
is aboullo launch its final 
Offensive 
on your 
battered 
town 




Incredible 3D graphics D^^^ Radar jammers 
Flashicad rapid losd syslem (lasler than disc} Joystick eoniroi 
16 le»e I game with r rtci eas i ng diHituFly F I a* Batteries 
3 types of enemy helicopters- Sold Gunship Transport 
Marvellous sound eHecrs and Iteme tune 
Air lo ground mtssto Air-tD-air missiies 

yL ihonght Falcon Patrol was good 

P iuora rnm a d by Stew Lw 




YOUR COMPUTER. NOVEMBER 1 »M 233 






The 




To 





Now, with the new Stonechip Spectrum Keyboard, the user has no worry of damaging the Spectrum 
itself as improved designing enables it to fit the case perfectly. 

Assembling the case is simple as it consists of two halves, the top half containing the keyboard, with 

a small printed circuit board, attached by ribbon cable, plugging into the rear of the Spectrum. The 

lower half fits precisely around the Spectrum, thus preventing any risk of damaging through 

movement. 

Your Sinclair guarantee need not be invalidated since the Spectrum does not require removal from 

its case, -\ 





THE MAIN FEATURES OF THE KEYBOARD ARE: 

No modifications to Spectrum necessary as if connects via rear port. 
Li Full-length space bar. 

Built-in 'Echo' amplifier and tape interface. 

RESET keys remove the need to disconnect power supply lead, 

Single key 'DELETE' 
D Single key 'Extended Mode' selection fie one kev replaces the CAPS SHIFT and SYMBOL SHIFT 

function). 

i i Fully compatible with Interface 1 and most peripherals. 




□ i To; StofMchip Electronics, Unit 9, The Brook Industrial Estats, 
| OMdbrw* Lmt, Alrtershot. Hants. T>ioph n* (0257) *333«1 




ELECTRONICS nSnnn! 



Stonechip Electronics, Unit 9, The Broofc Industrial Estate, 






Oeadbrook Lane, Aldershot. Hants. Telephone: (0252) 333361 



All prices jr* inclusive of VAr. fott 1 Packing for U KdettVMlH 
I lovtrtMt add ism 



Extender unit available to use with Interface 
2 and Kompsion Joystick Snierfaco C2.50, 



£59-95 



DEALER ENQUIRES WELCOME 
Dcuvery approximately 28 day* 





I 




Tou really can't go wrong 
with any Level 9 game 
as they are really brilliant 




CRASH MICRO SEPT '84. 






. ,t you hawe 

1 x£ •** 



i*** ,-,;-;; 7u*«* 



wanting 



lH ^i«9/ W , \ .,,,,1 <> A n- pu during » **"** 



Mart Use*. J«hJ ** 



it- '"■ 

„i.»i' 



\»lHiisl 8* 

11 rhis to where so 



, II 



Hil* - * 



111 1 . < 

,al1 "' Crash- J»»V84 



.- "" ::;;„«*» 



_ t ™n ««V I** «"* **™ i "* 

S3 **£SS 55*??. «*rs * 

£*■* ***** ^ Vout «*. Jun« W 



64 



^W'^VcG. April 

I \ n 

thtf t t'«'l 

,I,H ki in ***** m V 

^ a " pew. I Februaiv &4 




hi ,h P DTodutvi ui the best 

.^> • - 2EfS £ & - £>»■« ■ 

. i«» r "^T>l TIME te » M»tW>"a 



ivenW 



in^po 



iimv 



c 
You* Computer. Match 8* 





Level 9* s epic adventures are nof 
here for the AMSTRAD. Disk versions are available for 
the BBC (40/80 track) and Commodore 64. And, best of 
all, RETURN TO EDEN is ready. It's been a busy 
month! 
RETURN TO EDEN is the long-awaited sequel to | 

Level 9'stop-sellinj 

N E W Snowball adventure. Now 
it's here with 220 



locations, masses of puzzles, and 
with pictures on the CBM and 
Spectrum versions, 



AtraLl&bto f rum W H Smith *jid ftood rornpulAf ahop» Mwywher*. 
If your local <laaivr doesn't uicclt LerrnlftiKivftnUirwyov <»t him 
id contact us or Ctnmsotv. liittfodaalur UK. rtamnu ic Cr-mi* 
IdUuraeoft. Limit Ttm, [,VI,. PCS. Kit ft or Wondarbrtd£i 



Cw ew fiislt 

is.se &n as 

COLOSSAL AStrXttTSU TlwdMSMa 

niAiiLframit((«,m« wtUl TO bonuf rooms 
■ ADVKMTUEEqucsr. An epH journey 
through itiddi* Earth. 

IMM ADvcimiu Anuffn 
gUM which comptotoa the Middle 
K*rth TrtofcKSy 

4 * BOUri ALL- Baw tin lntantar fnacar. 
8nnwbeil S. in & hugs jpwpo tdyonuu* 
with over 7Q0O location* 
I RCTUWf TO BDEI» 8P adventure cfr 
the woiixlMtt planet *nr Trie sequel la 
Bno* ball though you don't need to 

• tOUUS Or t IMF , A humoroun romp 
through World History 



I EKFCLOSE ACTIEQUE/POFORW 
EACH (CASSETTE) OR £1 1 .96 EAC 
(DISK) FOR BBC OR CBM 64 

My name , 

My address 



My ffitetti Is a: . 

(orio of those listed, balow, 
with at toast 3EK of man: 
Contact 



Dept , 229, H ugh L- tide n B 

High Wyoom bo. Bucks HP13on 



AMSTRAD BBC CBM64 SPECTRUM MTX ORIC 1 LYNX NASCOM ATARI 




1fie games wme 









illllllllllllllllllllllllllllllllllllllllllllllllllllliillllllFlllllllllJIIIIJIJIIIIH 

Fling lor sample Printouts Full Spec and latest Price 



PRINTER BARGAINS 

STAR DP B4BO IHS232) 197 ... £187.00 INC VAT 

STAR GEMINI 10X E23S.OO INC VAT 

STAR GEMINI TSX £380.00 INC VAT 

STAR DELTA 10 £358.00 INC VAT 

JUKI 6100 £380.00 INC VAT 

CANON PW1080A £330.00 INC VAT 

Sccuncor delivery f 8,00 
CJE Micros BBC Printer Packs for Star. Canon & Juki 
Printers, 
Include I. the Printar. 2. Delivery by Securicar, 

3. Cable to the B8C 13 Meters, ** 

4. Screen Dump Program |M;C Source). 

5. Text Dump Program 

6. Function Key Set Up Program, fqc use with word 
wise. 

7. Function Koy Label Printing Program tor uh with 
above . 

8- View Printer Onvftr. 

9. 100 Sheets of Paper. 

10. A Mains Plug with a 3 amp plug, 

11. Booklet giving details of using the Primer with a 
BBC. 

Pfl INTER PACK PRICE Pfinter Price + £20.00 

CJE Printer Packs for other Micros include - Printer 
Cable, Paper. Mains Plug & Delivery, 

BBC Model B , £399.00 

BBCModelB + 01 £469.00 

ELECTRON ...,£19900 



PhanQ Credtt catd orders welcome 

CJE MICROCOMPUTERS 

Dept YC, 78 Brighton Rd. Worthing. 

West Sussex. 

(0903) 213900 



TYKES! 

It's all in Headingley at 




al 



I i 



The Super 

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Wm ttee* HAttOWMV 

Cnnwiw. &«4 j>im priniBta, mvnwi. <*<*■ T«p*«, q*v*i 

and BOfTWME 
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A 00*41. A»rt»> Btrcimcd, Ormrm, Crmm. wan pound tain 

rou » «*fc*«n* i« Mmi in and Imn, mm JWHwbar. toil* tMn* D» al , 

ftoxiworda computershop 

18 Ottoy Road Leeds LS6 2AD 

(05321 758474 



The Key to spectrum Machine Code Success 

Picturesque s MACHINE CODE SYSTEM is used and recommended ft v professional software writers, yet the excellent 
dot u mentation and the friendly, easy-to-use programs have been highly recommended for beginners. 

You wiilonry buy one Machine cole Systems buy the best.theone the prof esskjnalsuse. 



NEW IMPROVED PROGRAMS — MICRODRIVE COMPATIBLE 



ASSEMBLER 

completely setf-concamed 
wifti its own line editor gluing 
an easyto read 40 column 
tabulated listing, Auto nne 
numbering line renumbering 
ana auto tabulation make this 
one of the fastest and easiest 
Assemblers to uses- 
en aracter fabei names: 
Decimal. Hex or ASCII 
constants, save /LOAD/ 
VERIFY both the listing and 
Machine Code to cassette/ 

MICRODRIVE/NETWORK. 

Assemble from cassette or 
Microdrive into memory for very 
large programs Customise to most Centronics 
printer interfaces, or RS232 (with interface 11 for 80 column 
printout. FAST ASSEMBLY — 1k of code in 7 seconds. 
Assembler Directives — ORG. END. D£F8 defw. defm. EQu, 
defl (Microdrive and Centronics facilities 
only operate with aex machines* 




£8.50 

wcl vat a pap 



spectbuw 

MONITOR 



MONITOR 

The ideal tool to help the 
eg inner get started, yet It 
containsaii the commands for 
the experienced programmer 
to run and de-dug machine 
code programs, inspect ana 
alter memory contents in 
Hex or ASCII, Breakpoints ana 
full Register display now 

WITH SINGLE STEPPING 
through ram or ROM. 
Disassemble any part of 
memory. RAM or ROM. Dec- 
Hex Dec number converter, 
printer output to IX 
printer or via RS232 (with 
interface u or customise to 
most Centronics printer interfaces General memory 
management commands include Hex dump, insert, 
Delete, Flilana Move Can reside in memory with the 
Assembler (fl8K machines only) to give a complete 
Machine code programming system. 



I n»*»F*" 



£7.50 



i*mjp jm tMDdwflon uHfftt nin acwtn if 1*rf c«va i*tf o*wf <jf*iog* nm inifilf In 



IMCL VtK&Ptfi 



titotHtnmwmi 



Exntng gmrnn can mkjw m* r*w pn»rjrm u* wutrwia i 



to P*f urHoue *ong wwn t (jvojt CO tor 



Available from the SPECTRUM chain of stores, branches of John Men2iesand all good computer 

shops, or by mail order by sending checjue/POto: 
PICTURESQUE, 6 Corkscrew Hill WestWickham, Kent. BR4 9BB, Send SAE for details 




25B VOUfl COMPUTEH. NOVEMWR 1984 




"""W 







CQ**O0QtIS4 GWtiftOQOMM C0*AO0O*tM 



r _ ft JB 

** CO**OOOtIM 

COftMODORE dft • VIC2CH6K 









V M I *i 











VIC 20 





met© 








viciowu. , tic 

UTILITIES lh 




VIC Id 




nuor rwuMuri umou lormui iid ?• wt» 1 mi ojun>o*o «*n roiu i »rttJ * 















"ExcoMent throughout -a likckthurt tapper" 100<* Ratine 
(5 stars) 

PERSONAL COMPUTER NEWS 
"Exec Hunt game wilh beautifully coloured and do lined 
graphics" 

WHICH MICRO? 
This game is excellent - Jack louked almost human!' 

GAMES COMPUTING 
"An;ide standard - should please imist addicts 
(5 Star Ruling) 

HOME COMPUTING WEEKLY 
"Inshort.aftrsi rate game" 

TV GAMER 
"Jet -Bout Jack is a gem!" 

COMPUTER AND VIDEO GAMi S 
This bus to beonool die bos i. moal phmiblc and carefully 
thought uut games for (he Atari thai I u seen h>r ^ while" 

PERSON AL COM PUTE R N EWS 
What mure can Wl -..lv' " >p 



The 



. f J Lu.' t.nnir^v. & JJ J J5 |35 g ( 



Al imtt |h#f|tflT KHrtTleN ff«l py*» tha firing EwrtlUn ^ >frf| 



St*»6r» 







IS HERE! - 

7W£ TOP J 

AMERICAN { 

JOYSTICK 

IS NOW AVAILABLE 

IN THE U.K. . . . 



m 



V 



" lr £i 9.99 *n sop* r 

« Including fntvrfmc* to plug straight into thm Spectrum 

* 7h« first Joystick to givm you "Arcmdm" imrnl and conrtoi 

* "Jmt Stylm" hmmvy duty, diamond cut grip. 

* firm trigger placed undar your indttx finger . . thm ffngor with thm 
fastest influx action ■ S&ff c*ntr«ifig. 360" action 

« Comprttiblm vrrth most of thm t*t»it So ftwan IK*rtipton Systmml. 

Also available foe Commodore /Atari /BBC/ 



NEW 



ONLY £29.99 



SPEECH 
SYNTHESIZER 

[ WITH BUILT IN 

1 JOYSTICK 

INTERFACE 

mum SPECTRUM 



• Simply plug into an c*c>tmg 
new viand of computer speech synthesis. 
• Latest Stato of the Aft Electronic*. • Uses the 
Ailophane system , ■ Produces any word or phrase from an unlimited 
vocabulary. • Speaks directly through TV speaker * Also Amplifies 
Specif uros own sound through TV speaker! • BuHi in Joystick 
Irt'orlBce accepts any Atari type joystick for full games con tfoi 
(KempMon compatible!. • Complete wuh Demo Cassette. 
• Full Instructions. 



NOW for the Commodore • 
The COMMVERSA 
SPEECH SYNTHESISER 
CARTRIDGE ^ 

£24.99* rtMF+e) 

PRICE BREAKTHROUGH. 



* Simply plug into the exciting world of Speech Synthesis. 

* The Commversa has an unlimited vocabulary using the now 
standard Allophone System. • Programming fs so easy and sentences 
cam be made up in minutes* ■ Comes complete with fun instructions 

* Free Domotape. No extras required, 




TrjQa Command Spectrum £13.39 

ftigaCororrttrtdAuri f*-95 

' Tr-gdC&rifnarrtJ Ci>TkfTiosJofe £12 99 

Tt roil Comnuiud BBC {13.99 

Vox Bon, Spacirum C29J8 

Vr). BcmflTHlTDfljCorn.mjft'J f39 99 

COmmvaruConvTVKlore&t , f 24 99 



Poifg* Pl«*lc Atfif n, SO 24 HR C R E.D I T 

TRADE ENQUIRIES WEtCOMf CARD LINE 



ALLOW 
7 DAYS 



taVAWi 1"»»* fENION INDUSllttM t&tATf 







Prtfriinmahla 
Joystick Interface far 
the Spectrum 

£19.95 





* iriM Go****** ,ovii*r.» *.«* 

H«« IN U. ItneiriM (tWWM „, v „ ,«, lBt ^,M^ O-^w 1 1 

.nfe ■•>• .pq u „«tf Swum *,«* 1 nT ll|-J1 •■!«'-* ■creM 

T*o .u*jis*»i I**mi«*4 , i«i»a Iwiht Khn m» 

OUICKSMOT 7'2JOVST»CK 

•Wl«l id ncwiwiM J? 1*1 nc 

J ■ Kj j r^' ^ i'i I »■ «■<<*<« I- I u ■ 3 3 
m ne -MP* <*• otHWfl <nd VAT **d rtr 

FLI6MTLINK JOYSTICK £«Q gjj 



CURRAH yS*-£ECH UNIT £20 QC 

♦ .it m*» CCAKOW mt<r«i tlw ~~^7t . 

inc VAT md r A r 



0*j1«f £nquir«t Welcome 
Phone Ludlow 105841 4394 



H ' 



FREL LTD. 



ALSO AW AIL ABLE FROM 
SELECTED RETAIL 
<*"LETfi 



Haokayi Wilt, Ti rnetida, 
Ludlow. Shropthir* Sr8 IPO 



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01 



• rissa 



F^WUtaM 



• riovi 



03 



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Ml* I i ''WiJ rf ff .4 I 



■»< rn«o* Hilt> In *nt t I TO I 



IB! 



YOUR COMPUTER. NOVEMBER 19S4 241 





CLASSIFIED 



661 3036 

Contact; Lucy O'Sullivan 



ADVERTISEMENT RATES 



Copy Date 



Ltneaga: 50p par word 
[Mm 20 words) 
Bo* No: £A. 00 extra 
Linage advert i laments at% 
prepayable and the order form 
published in this section should 
be completed and returned 
with remittance. Credit Cord 
facilities ar-e available. 



Deploy — rotes per sec (Min, 2scc) 

One insertion : £9.00 

Three insertions : £8.70 

Six insertions : £8. SO 

Twelve insertions £8.00 

Display advertisers should 
preferably reserve space by phone. 



Cioimg dote (or Clarified 
advertisements is the 26th 
Nov. for the Jon. edition. 

Pott to 

Your Computer, Classified 
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Sutton. Surrey SAA2 5AS. 



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or Vic 20. £7 50 or free 
details from: 

DISCUS SOFTWARE 

FREEPOST, Windmill Hill 

Brlxham TGS 9BR 

Tel: 080 45 58532 



MK'KODKIM 
IRANSFKH TAl'h 



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hr '.rmiuinltJ li> MrtiVJni*. orr, jujd- 
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mlnrti irtti VOi>' It *n> kkvt*I aclKMn 

* iioei NOT r«v|b«c *n faUilmftil Hfif 
(«* 

* vim Auuimain. rulljr muirniiit 
tytlffiH hMK pnHtd l.piKtd , 

Hon -i *ork« lirplfi t inJ* 10 IlK 

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SPECIAL OfTFR Mnnt-nUiip or Ihe 
Mit mmm\ 1. 1 \iu * v;£ Nnrdttw 
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:*' I kcdtfrriim nril*, I p»»iiHh 

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1,r iir.|.-»* J-?IJ 



Spectrum Repairs 

lit**!, iftctuii^r ii( lalnxir pan- :■■'- 1 
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ifn Srnd rampubpf onli La 

HSCOMPl TFR SERVICES 

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Pil IBB.T*! ir77?&MfiW«fil«897 



COMMODORE 64 

RBS 
I Rankf Backup SrXami 
Cor-vw! v«ur linglc ml rat*teart r«pt 
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Canvr»*3fi' (Mc dnv». Eatn conmkK! 
pr»fl«»m MS load imj^p^inj^ntlt <rf 
R B.S Nomtn. neSyi. Cat*, ho Uw 
Kno*4**3» itqutoid Load "Tha heotm" 
in 120 ho tor panonal u*f orty 
Caanaiia CTW In* 

Hnmuvt - 14 
A ntUMkMri flfmbta tpff Vnrtng ut*ry 
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«*#J *t tfiirt r ap— d Cwam r* 60 a^c 

Backup - Oahua 
A powmhM and mm ItentSv »*eun(¥ 
bKkve ut*!y lHt>M «i pregram 
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*>rh 'M%1«*1 l(»^ n«lvi| t «fB 

Cmmrttt 17 SO inc ComcMt math nXK 
'"it $j»u< tax*>y 

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BLACKPOOL FY2 OEE 

FAST Of PATCH OUAHdiNTltO 



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OftCIMAt >mg a ma t>raawty n aa rt a J One anJ 
C g *i» mri o*» «4 E<*uut««ai « G*m« Caah 
paipneij W fW^Wtt PrfittHioraji atract 
nnr.i»v tdhofa^ too Sand yuur pity/*™ <« 
ContaSKMian KnlflrM Pnrfk«:H (UK! kKl Tt 
Com* Rowl fartw, Lancaahaa Bed SXL 

287 



MICRO ARTS 

Magazine and Software 




■ Art+; 
iv»-vi* itaata (Ir^fJMn r-Hai v w ™, 

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YOUR COMPUTER. NOVEMBER 1SS4 245 



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D4CKII OiVlR 

Oating (atfcia f>var . &>*• paap to th* DapW* of tha Duft tVigv Doman of tha 
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EE H 

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Twrd dank aatnai f w tFw w/hc** farn*V Uany noun or micnanmani tot I to 4 
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Tha Orapon 32 cjaatti* copai Tha <ocw w# av*n .mat* badkupa of th* laiaat 
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fOKboume. Hert» tNIO SRISf. 



24S YOUR COMPUTER, NOVEMBER 1984 






SPECTRUM and DRAGON TAPE COPIER 5 
and now MICRODRIVE 1 

MA PI AMI | 

I 
)f<Mli Ultcl IMMIIMI4 urillOt<t»>(l 

MA» lUtJW SSfAHS liMn M i, W.vM» li> 

» 



t 



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Its easy to 
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But which ones? 



MtCHODPIVE ONI IfttDI) 

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New Releases 

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Every week millions of advertisements 
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ASA Ud\Di-pt 2 Brook House, Ibmngton Place, London WC1E7HN 



/ 



mm 



This space n donated in the interests of high standafdi of advertising. 



CLASSIFIED 



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ORDER FORM 



Cla&sllied Rates 

Ho***; »• p*f word (Ml* » -w4*\ — 



tiiiayp mAv'uiiv t**o^fV tot'^imf* *fm form 
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n%*0t m 1 TrtTf* tiwp* and «Mr*ti ** hm 
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D^sptov — ffl*** par Kt (M-» Tucl 

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H#O*»0*0it m* ACC«» Viwj Barclay 
Cam Am*ncan ETptaWDcvart Oub In* 

OlDOVOw 



Please Insert the fallowing advertisement In Your Computer* Classified Section 










LINAGE 






























£10.00 












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— 



No. of insertions requlredri&ox No. required YESrNO 



1 1 ii 1 1 inn mn 



AOpfiCSS 



SHJ NATURE 



Post to: 

Cut out lha artm tarn nvf r+vtn 
toon** wnk ^our rumtinni 10 
CUvMid DaparBnant, Tour CilHHiW. 
Aoo<«W2ll. Quadrant Hduh, Th* 
Quadrant Sutton, Sumy $M? &AS 
• »l Ml 309) 



Payment by credit card please state address card is registered 
Daytimetel no 



THIS FORM SHOULDBERETLJRNED BY 26<h NOV. FOR JAN. ISSUE PUBLICATION 



Conraiaflr ffffawnrf Vutno*. I$?S7 tfrt&odt B*g<ii*t*t Ottm: tkudrmni Mown. 7Tm OaJtw^ Juirm, Sun*? S«? U! 



TOUP COMPUTER. NOVEMBER 1984 247 



A 



Hot* 
lines 

Acorn Computer 

Tetepnon* Cambndcje 0223 2463QQ 

Atari 
Camputers 

Telephone Carnbribge 0223 31M6J 

Commodore CBM 
Dragon Data 

Telephone Br dpend 0656 74472S 

Sharp 

Telephone Manchester 0S1 2062333 

Sinclair 

TeCecnone Cemtrrldoe 02TW<»I1 

Sord 

Telephone London 01 930 421* 

Tandy Corporation 

Telephone anminglwn Oil M66I01 

Texas Instruments 

Telephone Bedford 0234 632lt 




Local, national and 
international micro 
events are updated 
here. To publicise 
your event, phone 
Paul Bond on 
01-661 3472. 

NUMINE 
Conference 

Network of Users of Micro 
computer* in Nunc Education a 
holding a conference at Park Lone 
Stiff Education Centre, Maghull, 
Liverpool, on December Y 
TeJephoM 0S1 S3 1 0022 far 
dtl till. 

School Computer 

Fair 

For anyone involved in education, 
except, of count, the pupils Take* 
plan at Blocimstaury Crest , London 
from November 6-7, then up* 
uakn to Marwhetlcr from 
November 14-1$. More details from 
Pu blithers' Association. Telephone 
0I-WO6J2! 




The Lord Mayor of Bradford, Councillor Mr$ Olive Messer, opening 
flam's new £250,000 headquarters aided by staff adopting IBM's 
national advertising Chaplin theme m celebration of Rant's 
appointment as IBM PC's tirsl Yorkshire deafer. 



Compec 



Nnvrmbcf I M6 at Olymn i j . The 
bit buiincM computing exhibition 



iponsored by Computet Weekly, 
among others. More details from 
Reed Bxhibinoru, Telephone 01- 
6418040. 



INDEX OF ADVERTISERS 



8309 Colour Show 

A 

A 6 F Software 


SO 


200 


Acorn Computer* 


198' 199 


Actwlatan 


81,102 


Addictive Games 


219 


Advene* Technology 


121 


Adventure InlemiBUofiat 


20 


Armtrad 


129/127 


Anir-rfg 


3*7239 


Argue Prat** Softwef a 


54 


Ada 


36 39 


■ 
liihuo 


199 


Belasoft 


233 


Beyond Software 


82 83 


Btaby 


44 


Brrtwh Telecom \ Firefly 1 


224; 22 5 


Butler Micro 


49 


Boojbvte 


235 


Bulldog Software* 


22 



C 

CJE 




239 


Cambridge Micro Electric 


49 


Campbell Systems 




72 


Cimi Computers Simulator* 


96 


CiMHac Software 




327 


Cobalt Syatem* 




145 


Commodore 


10-19/104/ 


Com p<lj sound 




7 


Computer Game* 




118 


Computer Link 




36 


Computer mat* 




90 


Corgi Book* 




232 


Cfaairv* Spark* 




86 


Cumana 




92 


Currah Computers 




I9C 



D 

DACC 239 
D« Tronic* lSl/220/22 V'237 

Oai»»|j.. 35 

Date! 241 

Dean Electronic* 212 

Oomark 90 

OowntWtY 206 

OurreH Software 12/13 



English Software 

Everyday Electronic* 112 

F 

Ferguson 1 92 1 1 91 

Ftrtt London Mico Show 1 32 

Fleiriwords 236 

FrolLld 241 

From runner (K Tali 21/23 

O 

Galase! 7 

Galatreis 214 

Gd*orl 231 

H 

Heuajteirn 10 

Hew«on Con»utl*nu 199 

Mnofi 2i S 



Ibtco 233 

Industrial Proc*M 10 

innelec 16 

Infer Captor MicnS 1 64 

Interface 213 



Kempaion Micro 6 

Kosmos 7 

Kuma 126 

L 

LCL 227 

LTS 2 1 5 

Leeaafcnk 194 

Level 9 236 

Llamesott 24 



Melbourne Houa* 170/171/222/223 
M*moco 203 

Memotoch 66 

Mail Order Protection Scheme 214 
Mieip Answer* 72 

Micro F«*| 132 



Micro Markets 
Micro Workshop 
Micro- x 

Micodeel 
Micf ooet 900 
Micopowo' 
MtciOwar* 



210/211 

206 

216 

26 

6/9 

130/137/160,194 

44 



MHw Barter Software 



Modular Resource* 



National Software Library 
Now Generation Software 

Nordic Keyboards 



Oasts Sol i ware 

Ocean Publishing 

t> 

PAS 

PSS 

PV Tub** 

Ptumao 

FSeluiespue 

Practical ComfHrting 

Ptayboume 

Prmt n' Plotter 

Prolisotf 

Protak 



Iff 

113 
166 



36 

209 
4 



142 
BC 



216 

11 

231 

186/197 
239 
182 
168 

204/206 

180 

66764/94 



Shvw eve 1 36 

Sottcantre 72 

Soitsei 226 

Soli ware CommurMcationa If C 

Soli ware Farm 1 4 

Son were Library 146 

Southern Software 1 96 

Specladraw 46 

Spectre 132/206 

Spectrum 27-33 

Sletewrt 140 

Slonechip 234 

Swantey Computer* 212 

Sybex 1 86 

T 

TEC 212 

Talung 230/106 

Tektonte 166 

Thought* A Crosse* 207 

Toshiba 99 

Touchmaaiar 136/167 

Touchmaaier 177 

Trenuver J OH 

TriplyCh M 

TrrtonK 1 

u 

US Gold 

92/1 1 4/i4»r 1 62/1 72/19 1/202 

Ulfmate Ploy the Game 1 I 1 / 1 38/1 39 

Uotver * ily Software 1 



Qirtcksihre 


116/117*178/179 


y 




R 




Virgin Book* 


140 


Ram Flecl ronics 


66 


Virg-nGame* 227/229/231/233 


Radhaich 


46 


Vinonitore 


218 


Richard Wilcox 


6 






ftomac 


84 


W 




Row Software 


229 


WQ Com 


69 


Roi ronics 


168/174 


WH Smiths 


166 






WaBxar Computers 


46 


9 




waiters Computer Systems 


162 


Saga System* 


159 


W,rard 


214 


Saratoft 


209 


Worldwide Computer* 


209 


Sot IUKI 


69 






Setae Software 


44 


I 




Silicon Joy 


228 


IX Mitrofair 


217 



249 YOUR COMPUTER. NOVEMBER 1984 



FUN MTU SPEECH 641 






SPEECH 64 for Lhe Commodore 6^ is ready 
to talk immediately on power-up. has an infinite 
bulary and extra BASIC commands. Retailing 
£29.95, SPEECH 64$ advanced 
Features will give you, your family and friends 
lots more fun with your computer! Its sister unit 
/nSPEECH — for the Sinclair Spectrum — is a 
smash hit in the (JK and over 10 other 
ecus and has been awarded the CTA 

'Product of the Year' accolade. 

SPEECH 64 is easy to use! It needs no 
software to be loaded, it does not steal RAM 
from the BASIC operating system, or stop 
arcade style action, 

With extended BASIC commands like SAY and 
its Text to Speech facility SPEECH 64 can 
be programmed in plain English, just like this: 
SAY "to say anything you want" 

You can choose from two different voices, each 
with programmable intonation, and other 
commands control the voicing of keys as they 
are pressed — a useful educational aid for 
young children. 



SPEECH 64 comes complete with full 
documentation and two free full colour posters. 
Watch out for SPEECH 64 as it appear 
retail outlets nationwide — or use the order 
form befow, at no eKtra cost. 



CUR RAH 



Computor Components Ltd 



Tor SPEECH U Offer, P.O. Box ».G*le*hMd.Tyn*£- Wmt, NEB IAJ 



Pletw Supply 

NaroclptMiepWf 



SPEECH M m*M * L&.tt txhKl YAT&P h P 



A44Fe»{jrte*ttpm> 



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I enekw* • cheoj*PO pqtffe to SPEECH 64 Q8*t' wbc £ 



The king returns with a vengeance! 







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694 

COMMODORE 



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Ocean House 

6 Central Street 

Manchester M2 SNS 

Tel: 06 1 832 6633 




s«te«fid branches of: WOOiWOfmi WKSMITH. Jffi&.'^SBSEI. USF! 
Rumbelows, Specuum Shop* and all good software deiServ Trade enquiries wckc 



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